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Chi Y, Pan Y, Zhang N, Han D, Guo X, Mao Z, Cheng G. Clinical Outcomes of MRI-Guided Adaptive Brachytherapy for Each Fraction in Locally Advanced Cervical Cancer: A Single Institution Experience. Front Oncol 2022; 12:841980. [PMID: 35372065 PMCID: PMC8968417 DOI: 10.3389/fonc.2022.841980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose This study aims to evaluate clinical outcomes of MRI-guided adaptive brachytherapy (MR-IGABT) for each brachytherapy fraction in patients with locally advanced cervical cancer (LACC). Methods and Materials A retrospective analysis was performed on 97 consecutive patients with LACC treated with 44.0–50.4 Gy external beam radiotherapy (EBRT) ± concurrent platinum-containing chemotherapy followed by 4 × 7 Gy MR-IGABT between September 2014 and April 2019. Intracavitary (IC)/interstitial (IS)/hybrid intracavitary and interstitial (IC/IS) brachytherapy was used in MR-IGABT. Brachytherapy planning and dose reporting followed the GEC-ESTRO recommendations. Clinical outcomes including overall survival (OS), cancer-specific survival (CSS), progression-free survival (PFS), local control (LC), and treatment-related toxicity evaluated by the RTOG criteria were analyzed. Kaplan–Meier and univariable and multivariable Cox regression analyses were used to analyze the prognostic factor. Results Median follow-up was 21.1 months. Median dose to 90% (D90) of the high-risk clinical target volume (HR-CTV) was 91.7 Gy (range 76.7~107.2 Gy). Two-year OS, CSS, PFS, and LC were 83.5%, 84.1%, 71.1%, and 94.8%, respectively. Four patients (4.1%) suffered from grade 3 late gastrointestinal radiation toxicity, and no other grade 3 or greater radiation toxicity occurred. Initial HR-CTV was an independent factor of OS (p = 0.001, HR = 1.018/cm3), PFS (p = 0.012, HR = 1.012/cm3), and LC (p = 0.011, HR = 1.028/cm3). The HR-CTV D90 (p = 0.044, HR = 0.923/Gy) was an independent factor of PFS. Age was an independent factor of LC (p = 0.010, HR = 1.111/year). Conclusion For patients with LACC, MR-IGABT was effective and safe. It showed favorable LC, OS, and minimal toxicity. Moreover, initial HR-CTV, HR-CTV D90, and age were significant prognostic factors.
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Affiliation(s)
- Yunbo Chi
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Ying Pan
- Department of Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Ning Zhang
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Dongmei Han
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xin Guo
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Zhuang Mao
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Guanghui Cheng
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
- *Correspondence: Guanghui Cheng,
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Yoshimoto Y, Murata K, Irie D, Ando K, Adachi A, Aoki H, Hirakawa T, Noda SE, Nakano T, Ohno T. A retrospective study of small-pelvis radiotherapy plus image-guided brachytherapy in stage I-II non-bulky cervical squamous cell carcinoma. JOURNAL OF RADIATION RESEARCH 2022; 63:290-295. [PMID: 35152292 PMCID: PMC8944301 DOI: 10.1093/jrr/rrac001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/18/2021] [Indexed: 06/14/2023]
Abstract
We herein report a retrospective analysis of the efficacy of a combination therapy of pelvic irradiation that excluded the common iliac lymph nodes region and image-guided brachytherapy (IGBT) for non-bulky (≤4 cm) cervical cancer. Thirty-three patients with stage I-II cervical squamous cell carcinoma (≤4 cm) and without pelvic/para-aortic lymphadenopathy who were treated with definitive radiotherapy alone between February 2009 and September 2016 were included. The radiotherapy consisted of CT-based small-pelvis irradiation (whole pelvis minus common iliac lymph node area) of 20 Gy/10 fractions followed by pelvic irradiation with a midline block of 30 Gy/15 fractions and IGBT of 24 Gy/4 fractions (6 Gy/fraction for high-risk [HR] clinical target volume [CTV] D90%). In-room computed tomography (CT) imaging with applicator insertion was used for brachytherapy planning, with physical examinations and diagnostic magnetic resonance imaging (MRI) also being referred to for determination of HR CTV. Over a median follow-up of 60.5 months (range, 7-89), two patients developed distant recurrence and one developed local and distant recurrence. Two patients died from cervical cancer, one from hepatocellular carcinoma and one from non-cancerous disease. The 2/5-year local control (LC), progression-free survival (PFS) and overall survival (OS) rates were 100%/96.7%, 93.8%/90.6% and 93.9%/93.9%, respectively. No pelvic/para-aortic lymph node recurrence was observed. There were no late complications of grade 3 or higher in the small bowel, large bowel/rectum, or bladder. Our results suggest that a combination therapy of IGBT plus small-pelvis irradiation excluding common iliac lymph nodes provides reasonable clinical outcomes and can be a treatment option in non-bulky (≤4 cm) cervical squamous cell carcinoma.
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Affiliation(s)
| | | | - Daisuke Irie
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Ken Ando
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Akiko Adachi
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hiroshi Aoki
- Department of Obstetrics and Gynecology, National Hospital Organization Takasaki General Medical Center, 36 Takamatsu-cho. Takasaki, Gunma 370-0829, Japan
| | - Takashi Hirakawa
- Department of Obstetrics and Gynecology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Shin-ei Noda
- Department of Radiation Oncology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, Japan
| | - Takashi Nakano
- Quantum Life and Medical Science Directorate, National Institute for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Tatsuya Ohno
- Corresponding author. Tatsuya Ohno, Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan. Tel: +81-27-220-8383; Fax: +81-27-220-8397; E-mail:
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153
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Jhingran A. Updates in the treatment of vaginal cancer. Int J Gynecol Cancer 2022; 32:344-351. [PMID: 35256422 PMCID: PMC8921584 DOI: 10.1136/ijgc-2021-002517] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 01/13/2022] [Indexed: 12/13/2022] Open
Abstract
Vaginal cancer is a rare cancer. A lot of the data used in the treatment of this cancer are extrapolated from cervical cancer data. Radiation therapy plays a significant role in the treatment of vaginal cancer. The advances in radiation therapy in both external beam and brachytherapy have improved local control, survival, and toxicity. Brachytherapy plays an important role in treating vaginal cancer, but treatment should be individualized to each tumor. Imaging, particularly magnetic resonance imaging, plays an essential role in the management of patients with vaginal cancer, from diagnosis to staging to treatment management to surveillance.
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Affiliation(s)
- Anuja Jhingran
- Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA
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154
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Tseng M, Ngoi NYL, Tan DSP, Tong PSY. Combined modality management of advanced cervical cancer including novel sensitizers. Int J Gynecol Cancer 2022; 32:246-259. [DOI: 10.1136/ijgc-2021-003137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/07/2022] [Indexed: 11/04/2022] Open
Abstract
The management of advanced cervical cancer has evolved with time. Combined modality treatments for cervical cancer have been shown to improve clinical outcomes for these patients. The role of surgery is reviewed in this article for specific situations such as the treatment of bulky lymph nodes and even in the metastatic setting. External beam radiotherapy and brachytherapy techniques have improved which has decreased patient toxicity. Systemic therapy such as chemotherapy, immunotherapy, and novel sensitizing agents have been extensively studied and have shown promising results. The combination of these three different modalities of treatment can be tailored to each specific patient to achieve the best outcomes. We review the recent advances and various international guidelines for the management of cervical cancer in this article.
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155
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Mayadev JS, Ke G, Mahantshetty U, Pereira MD, Tarnawski R, Toita T. Global challenges of radiotherapy for the treatment of locally advanced cervical cancer. Int J Gynecol Cancer 2022; 32:436-445. [PMID: 35256434 PMCID: PMC8921593 DOI: 10.1136/ijgc-2021-003001] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 12/14/2021] [Indexed: 11/17/2022] Open
Abstract
Cervical cancer represents a significant portion of the global cancer burden for women, with low- and middle-income countries carrying the bulk of this burden. Additionally, underserved populations in countries with sufficient resources may have a higher incidence of cervical cancer and poorer outcomes. Concurrent chemoradiotherapy is the standard-of-care treatment for locally advanced cervical cancer, which includes patients with stage IB3 to IVA disease, and it is effective for many patients; however, cervical cancer-related mortality remains high. The critical nature of cervical cancer treatment is underscored by the recent launch of the World Health Organization global initiative to accelerate the elimination of cervical cancer using a triple-intervention strategy of increased vaccination, screening, and treatment. The initiative calls for 90% of all patients diagnosed with cervical cancer to receive the appropriate treatment, but to reach this global goal there are significant barriers related to radiotherapy that must be addressed. We discuss and review evidence of the lack of adherence to guideline-recommended treatment, brachytherapy underutilization, limited access to radiotherapy in low- and middle-income countries, as well as regional limitations within high-income countries, as the major barriers to radiotherapy treatment for locally advanced cervical cancer. We further review ways these barriers are currently being addressed and, in some cases, make additional recommendations to address these issues. Finally, despite receiving recommended treatments, many patients with locally advanced cervical cancer have a poor prognosis. With effective administration of current standards of care, the global community will be able to shift focus to advancing treatment efficacy for these patients. We review several types of therapies under clinical investigation that are additions to concurrent chemoradiotherapy, including immune checkpoint inhibitors, antiangiogenic agents, DNA repair inhibitors, human papillomavirus vaccines, and radiosensitizing nanoparticles.
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Affiliation(s)
- Jyoti S Mayadev
- University of California San Diego, La Jolla, California, USA
| | - Guihao Ke
- Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Umesh Mahantshetty
- Radiation Oncology, Homi Bhabha Cancer Hospital and Research Centre, Visakhapatnam, Andhra Pradesh, India
| | | | - Rafal Tarnawski
- Maria Skłodowska-Curie Memorial Cancer Center, Gliwice, Poland
| | - Takafumi Toita
- Radiation Therapy Center, Okinawa Chubu Hospital, Uruma, Okinawa, Japan
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156
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Donovan EK, Covens AL, Kupets RS, Leung EW. The role of oophoropexy in patients with gynecological cancer who need radiation therapy. Int J Gynecol Cancer 2022; 32:380-388. [DOI: 10.1136/ijgc-2021-002471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/06/2021] [Indexed: 11/03/2022] Open
Abstract
Pelvic radiotherapy is an essential component of cancer therapy for patients with cervical and other gynecological malignancies. The ovaries are particularly radiosensitive, and even low radiotherapy doses may result in impaired or complete loss of ovarian function, causing hormonal disturbances and infertility. Recent advances in both surgery and radiotherapy have facilitated the ability of some patients to maintain ovarian function through ovarian transposition and careful radiotherapy planning. Multidisciplinary discussions should be undertaken to consider which candidates are appropriate for transposition. Generally, patients under age 35 should be considered due to ovarian reserve, likelihood of oophoropexy success, and radioresistance of ovaries. Those patients with small squamous cell tumors, minimal extra-uterine extension, and no lymphovascular invasion or lymph node involvement are ideal candidates to minimize risk of ovarian metastasis. Patients should be assessed and counseled about the risks of ovarian metastasis and the likelihood of successful ovarian preservation before undergoing oophoropexy and starting treatment. Oophoropexy should be bilateral if possible, and ovaries should be placed superior and lateral to the radiotherapy field. Studies limiting the mean ovarian dose to less than 2–3 Gray have demonstrated excellent preservation of ovarian function. Intensity modulated radiotherapy and volumetric modulated arc therapy techniques have the potential to further minimize the dose to the ovary with excellent outcomes. The addition of brachytherapy to the treatment regimen will probably cause minimal risk to transposed ovaries. Oophoropexy before radiotherapy may preserve the hormonal function of ovaries for a duration, and fertility might be possible through surrogate pregnancy. Successful ovarian transposition has the potential to improve the overall health and wellbeing, reproductive options, and potentially quality of life in patients with cervical and other gynecological cancers.
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157
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Chou B, Prasad Venkatesulu B, Coleman RL, Harkenrider M, Small Jr W. Management of stage I and II cervical cancer: a review. Int J Gynecol Cancer 2022; 32:216-224. [DOI: 10.1136/ijgc-2021-002527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/13/2022] [Indexed: 11/04/2022] Open
Abstract
In the modern era, cervical cancer treatment has become more multidisciplinary in nature. Accurate and precise staging based on clinical and radiographic findings, as well as identification of pathologic and molecular risk factors, may alter treatment recommendations. Additionally, the body of evidence guiding optimal treatment recommendations continues to grow. Multiple specialists including gynecologic oncologists, radiation oncologists, medical oncologists, radiologists, pathologists, and other ancillary staff, often with subspecialty experience in gynecology or cancer care, now staff multidisciplinary gynecologic oncology teams. This review highlights the basis of multidisciplinary treatment of early-stage cervical cancer, with a focus on surgical interventions, the role of adjuvant therapy, and indications for definitive chemoradiation. We specifically focus on the treatment of cervical cancer from stage IA1 (microinvasive disease) to stage IIB (parametrial involvement without involvement of pelvic sidewall). The staging manuals referenced in this review include the International Federation of Gynecology and Obstetrics (FIGO) 2018 staging as well as the updated American Joint Committee on Cancer (AJCC) 9th edition (2021).
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158
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Chang D, Moore A, van Dyk S, Khaw P. Why quality assurance is necessary in gynecologic radiation oncology. Int J Gynecol Cancer 2022; 32:402-406. [DOI: 10.1136/ijgc-2021-002534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/16/2021] [Indexed: 11/03/2022] Open
Abstract
Quality assurance (QA) in radiation oncology involves all checks and processes that ensure that radiotherapy is delivered in an optimal and intended manner. QA is essential for the accurate delivery of brachytherapy and external beam radiotherapy in patients diagnosed with gynecologic malignancies. Inadequate QA can adversely impact clinical outcomes and reduce the reliability of clinical trials. This review highlights the importance of QA in gynecologic radiation oncology and explores the pertinent issues related to its implementation.
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159
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Morcos M, Vogel J, Garcia JR, Gomez-Lobo V, Bartolac S. Treatment of pediatric vaginal rhabdomyosarcoma with the use of a real-time tracked custom applicator. Brachytherapy 2022; 21:291-299. [DOI: 10.1016/j.brachy.2021.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/18/2021] [Accepted: 05/08/2021] [Indexed: 11/02/2022]
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160
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Feasibility of electronic brachytherapy in cervix cancer-A dosimetric comparison of different brachytherapy techniques. Brachytherapy 2022; 21:389-396. [PMID: 35246391 DOI: 10.1016/j.brachy.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 11/23/2022]
Abstract
INTRODUCTION This study analyzes cases in which electronic brachytherapy (eBT) led to acceptable treatment plans in cervical cancer. Findings were compared with dosimetry values obtained in 192Ir-based treatments according to the high-risk clinical target volume (HR-CTV) and the disease stage. MATERIAL AND METHODS We retrospectively analyzed 48 patients with cervical cancer from two centers. The patients were treated with 192Ir based on MRI. It was possible to use interstitial needles via an Utrecht-type applicator. Dosimetry was simulated using eBT and the parameters D90 and D98 (HR-CTV) and D2cc, D1cc, and D0.1cc (bladder, rectum, and sigmoid colon) were evaluated. The Mann-Whitney U test was used for comparison. The overall cohort of patients was analyzed, as were the sub-cohorts based on stage (FIGO stages I+IIA, IIB and III-IV). Finally, the dosimetry of the eBT plans was evaluated, and the plans obtained were classified as "good", "acceptable", or "poor". RESULTS Statistically significant differences were found between the eBT and 192Ir plans for D98 (HR-CTV), D1cc and D0.1cc (bladder), and D1cc and D0.1cc (sigmoid colon). A total of 31 cases (64.6%) were considered good, seven (14.6%) were considered acceptable, and 10 (20.8%) were considered poor. For volumes <30 cc, all the plans were good or acceptable; for volumes >30 cc, 54.3% were good, and 71.4% were good or acceptable. By stage, eBT plans for patients with stage IB-IIA disease were good in 100%, whereas those for patients with stage IIB were good in 70.6% and III-IV disease were good in 50%. CONCLUSIONS eBT provides appropriate dosimetry for treatment of cervical cancer in selected cases.
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161
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Cao Y, Vassantachart A, Ragab O, Bian S, Mitra P, Xu Z, Gallogly AZ, Cui J, Shen ZL, Balik S, Gribble M, Chang EL, Fan Z, Yang W. Automatic segmentation of high-risk clinical target volume for tandem-and-ovoids brachytherapy patients using an asymmetric dual-path convolutional neural network. Med Phys 2022; 49:1712-1722. [PMID: 35080018 PMCID: PMC9170543 DOI: 10.1002/mp.15490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 11/10/2022] Open
Abstract
PURPOSES Preimplant diagnostic magnetic resonance imaging is the gold standard for image-guided tandem-and-ovoids (T&O) brachytherapy for cervical cancer. However, high dose rate brachytherapy planning is typically done on postimplant CT-based high-risk clinical target volume (HR-CTVCT ) because the transfer of preimplant Magnetic resonance (MR)-based HR-CTV (HR-CTVMR ) to the postimplant planning CT is difficult due to anatomical changes caused by applicator insertion, vaginal packing, and the filling status of the bladder and rectum. This study aims to train a dual-path convolutional neural network (CNN) for automatic segmentation of HR-CTVCT on postimplant planning CT with guidance from preimplant diagnostic MR. METHODS Preimplant T2-weighted MR and postimplant CT images for 65 (48 for training, eight for validation, and nine for testing) patients were retrospectively solicited from our institutional database. MR was aligned to the corresponding CT using rigid registration. HR-CTVCT and HR-CTVMR were manually contoured on CT and MR by an experienced radiation oncologist. All images were then resampled to a spatial resolution of 0.5 × 0.5 × 1.25 mm. A dual-path 3D asymmetric CNN architecture with two encoding paths was built to extract CT and MR image features. The MR was masked by HR-CTVMR contour while the entire CT volume was included. The network put an asymmetric weighting of 18:6 for CT: MR. Voxel-based dice similarity coefficient (DSCV ), sensitivity, precision, and 95% Hausdorff distance (95-HD) were used to evaluate model performance. Cross-validation was performed to assess model stability. The study cohort was divided into a small tumor group (<20 cc), medium tumor group (20-40 cc), and large tumor group (>40 cc) based on the HR-CTVCT for model evaluation. Single-path CNN models were trained with the same parameters as those in dual-path models. RESULTS For this patient cohort, the dual-path CNN model improved each of our objective findings, including DSCV , sensitivity, and precision, with an average improvement of 8%, 7%, and 12%, respectively. The 95-HD was improved by an average of 1.65 mm compared to the single-path model with only CT images as input. In addition, the area under the curve for different networks was 0.86 (dual-path with CT and MR) and 0.80 (single-path with CT), respectively. The dual-path CNN model with asymmetric weighting achieved the best performance with DSCV of 0.65 ± 0.03 (0.61-0.70), 0.79 ± 0.02 (0.74-0.85), and 0.75 ± 0.04 (0.68-0.79) for small, medium, and large group. 95-HD were 7.34 (5.35-10.45) mm, 5.48 (3.21-8.43) mm, and 6.21 (5.34-9.32) mm for the three size groups, respectively. CONCLUSIONS An asymmetric CNN model with two encoding paths from preimplant MR (masked by HR-CTVMR ) and postimplant CT images was successfully developed for automatic segmentation of HR-CTVCT for T&O brachytherapy patients.
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Affiliation(s)
- Yufeng Cao
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - April Vassantachart
- Department of Radiation Oncology, LAC+USC Medical Center, Los Angeles, California, USA
| | - Omar Ragab
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Shelly Bian
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Priya Mitra
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Zhengzheng Xu
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Audrey Zhuang Gallogly
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Jing Cui
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Zhilei Liu Shen
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Salim Balik
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Michael Gribble
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Eric L. Chang
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Zhaoyang Fan
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Wensha Yang
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
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3D-Image-Guided Multi-Catheter Interstitial Brachytherapy for Bulky and High-Risk Stage IIB-IVB Cervical Cancer. Cancers (Basel) 2022; 14:cancers14051257. [PMID: 35267565 PMCID: PMC8909688 DOI: 10.3390/cancers14051257] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/25/2022] [Accepted: 02/26/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The prognosis of locally advanced cervical cancer still remains poor. Recently, image-guided brachytherapy ameliorated local control and pelvic control in these patients. Additionally, concurrent chemoradiotherapy with interstitial brachytherapy (ISBT) demonstrated more favorable outcomes than that with intracavity brachytherapy. The purpose of our study was to evaluate the efficacy and safety of CT-MRI-guided multi-catheter ISBT for bulky (≥4 cm) and high-risk stage IIB-IVB cervical cancer. Total of 18 patients with squamous cell carcinoma received concurrent chemoradiotherapy with ISBT were assessed. Four (22.2%), seven (38.9%), and seven (38.9%) patients were diagnosed with stage II, III, and IV cervical cancer, respectively. The four-year local control, pelvic control, disease-free survival, and overall survival rates were 100%, 100%, 81.6%, and 87.8%, respectively. Although three (16.7%) patients experienced grade 3 late adverse events, no one had procedure-related complications. CT-MRI-guided multi-catheter ISBT could be a promising treatment strategy for locally advanced cervical cancer. Abstract This study aimed to evaluate the efficacy and safety of computed tomography-magnetic resonance imaging (CT-MRI)-guided multi-catheter interstitial brachytherapy for patients with bulky (≥4 cm) and high-risk, stage IIB–IVB advanced cervical cancer. Eighteen patients who underwent concurrent chemoradiotherapy with multi-catheter interstitial brachytherapy between September 2014 and August 2020 were enrolled. The prescribed dose of external beam radiotherapy was 45–50.4 Gy, and the brachytherapy high-dose-rate aim was 25–30 Gy per 5 fractions. The endpoints were four-year local and pelvic control rates, four-year disease-free and overall survival rates, and the adverse events rate. The median follow-up period was 48.4 months (9.1–87.5 months). Fifteen patients received concurrent cisplatin therapy (40 mg/m2, q1week). Four (22.2%), seven (38.9%), and seven (38.9%) patients had stage II, III, and IV cervical cancer, respectively. Pelvic and para-aortic lymph node metastases were observed in 11 (61.1%) and 2 (11.1%) patients, respectively. The median pre-treatment volume was 87.5 cm3. The four-year local control, pelvic control, disease-free survival, and overall survival rates were 100%, 100%, 81.6%, and 87.8%, respectively. Three (16.7%) patients experienced grade 3 adverse events, and none experienced grade 4–5 adverse events. CT-MRI-guided multi-catheter interstitial brachytherapy could be a promising treatment strategy for locally advanced cervical cancer.
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Chow B, Warkentin B, Nanda K, Ghosh S, Huang F, Gamper AM, Menon G. BAIRDA: a novel in vitro setup to quantify radiobiological parameters for cervical cancer brachytherapy dose estimations. Phys Med Biol 2022; 67. [DOI: 10.1088/1361-6560/ac4fa3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/27/2022] [Indexed: 11/11/2022]
Abstract
Abstract
Objective. Brachytherapy (BT) dose prescriptions for locally advanced cervical cancer are made with account for the radiobiological parameters, α/β ratio and halftime of repair (T
1/2
). However, a wide range of parameter values has been reported which can challenge commonly held equivalencies between dose prescriptions. This is the first reported study that aims to develop an in vitro experimental technique using clinical high-dose-rate (HDR) and pulsed-dose-rate (PDR) Ir-192 brachytherapy afterloaders to quantify these parameters in vitro and to contextualize findings within contemporary practice. Approach. To efficiently quantify α/β and T
1/2
, in vitro experiments more reflective of clinical BT practice than traditional clonogenic survival assays were developed and applied to four squamous cell carcinoma cell lines (CaSki, C-33A, SiHa, and SW756). Radiation was delivered using single acute and fractionated dose treatments with a conventional irradiator and clinical HDR and PDR BT afterloaders. For the latter, a novel brachytherapy afterloader
in vitro
radiation delivery apparatus (BAIRDA) was developed. Main Results. The α/β and T
1/2
values determined using BAIRDA and the conventional irradiator showed close agreement, validating the novel apparatus and technique. For CaSki, C-33A, SiHa, and SW756, the BAIRDA-measured α/β ratios (5.2 [4.6–5.8], 5.6 [4.5–6.6], 6.3 [4.9–7.7], and 5.3 [4.7–6.0] Gy, respectively) were consistently smaller, while the T
1/2
(3.3 [2.7–3.9], 2.7 [2.0–3.3], 2.8 (2.4–3.1], and 4.8 [4.1–5.4] hours) larger, than the widely accepted values in clinical practice (α/β = 10 Gy; T
1/2
= 1.5 h). Significance. In vitro experiments using BAIRDA provided evidence for differences between the conventionally selected and experimentally determined α/β ratio and T
1/2
. Treatment regimens using HDR-BT and PDR-BT, designed to deliver equivalent radiobiological doses based on conventional values, were shown to differ by up to 27 Gy EQD2 – an effect that could impact treatment outcomes in cervical cancer. Furthermore, with BAIRDA, we have developed a novel method for radiobiological research in BT.
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Itami J, Murakami N, Watanabe M, Sekii S, Kasamatsu T, Kato S, Hirowatari H, Ikushima H, Ando K, Ohno T, Okamoto H, Okuma K, Igaki H. Combined Interstitial and Intracavitary High-Dose Rate Brachytherapy of Cervical Cancer. Front Oncol 2022; 11:809825. [PMID: 35096614 PMCID: PMC8793862 DOI: 10.3389/fonc.2021.809825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/16/2021] [Indexed: 12/05/2022] Open
Abstract
High-dose-rate brachytherapy by remote afterloading is now performed under three-dimensional image guidance by CT or MRI. Three-dimensional image-guided brachytherapy in cervical cancer disclosed that the traditional intracavitary brachytherapy by Manchester method cannot deliver an adequate dose to the large tumor with resulting local recurrence. To improve the local control rate, combined interstitial and intracavitary (hybrid) brachytherapy can increase the dose to the large parametrial involvement without increasing the dose to the rectum and bladder. Whether hybrid brachytherapy can be performed safely on a multi-institutional basis remains to be studied. From 2015, phase I/II study of hybrid brachytherapy was launched in Japan, and it was revealed that hybrid brachytherapy can be performed safely and with a high quality of radiation dose distribution in a multi-institutional study. In Japan, the number of patients undergoing hybrid brachytherapy in cervical cancer is rapidly rising. Education and clinical trial are very important to establish hybrid brachytherapy in the management of cervical cancer.
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Affiliation(s)
- Jun Itami
- Shin-Matsudo Accuracy Radiation Therapy Center, Shin-Matsudo Central General Hospital, Chiba, Japan.,Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Naoya Murakami
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Miho Watanabe
- Department of Radiology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Shuhei Sekii
- Department of Radiation Oncology, Hyogo Prefectural Cancer Center, Hyogo, Japan
| | - Takahiro Kasamatsu
- Department of Gynecology, Tokyo Metropolitan Bokuto Hospital, Tokyo, Japan
| | - Shingo Kato
- Department of Radiation Oncology, International Medical Center, Saitama Medical University, Saitama, Japan
| | - Hisako Hirowatari
- Department of Radiation Oncology, Tokyo Rinkai Hospital, Tokyo, Japan
| | - Hitoshi Ikushima
- Department of Radiation Oncology, Tokushima University Faculty of Medicine, Tokushima, Japan
| | - Ken Ando
- Department of Radiation Oncology, Gunma Cancer Center, Gunma, Japan
| | - Tatsuya Ohno
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hiroyuki Okamoto
- Department of Medical Physics, National Cancer Center Hospital, Tokyo, Japan
| | - Kae Okuma
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Hiroshi Igaki
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
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165
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Alsner J, Overgaard J, Tramm T, Lindegaard JC. Hypoxic gene expression is a prognostic factor for disease free survival in a cohort of locally advanced squamous cell cancer of the uterine cervix. Acta Oncol 2022; 61:172-178. [PMID: 34586924 DOI: 10.1080/0284186x.2021.1979249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Tumour hypoxia in locally advanced squamous cervical cancer (LACC) has been shown to be of substantial prognostic importance. The aims of the present study were therefore to investigate if hypoxia could be identified by a newly validated hypoxic gene expression classifier and used as a prognostic factor for disease free survival (DFS). MATERIAL AND METHODS Paraffin embedded biopsies were obtained from 190 patients with LACC with squamous cell carcinoma treated 2005-2016 with chemo-radiation and image guided adaptive brachytherapy. Analysis of hypoxia was successful in 183 patients (96%). Hypoxic classification of tumours into 'more' or 'less' hypoxic was based on 15 genes using the same method as in a prospective head and neck cancer trial (NCT02661152). HPV was genotyped using INNO-LiPA. Local tumour invasion was evaluated by the T-score. Primary endpoint was DFS analysed by Kaplan-Meier and Cox regression. Events were death of any cause, persistent disease, or recurrence. RESULTS The FIGO2009 stage distribution was IB-IIA 9%, IIB 64%, and III-IVA 27%, and mean T-score was 7.2. Pathological nodes were present in 53%. Median observation time was 5.2 years. Local control rate at 5 years was 96%, and pelvic (loco-regional) control 91%. Overall, 36% of the tumours were classified as 'more' hypoxic. The frequency of 'more' hypoxic tumours increased with local tumour intrusion (30% for T-score 0-9 vs. 55% for T-score ≥10, p = 0.004). Hypoxia was associated with decreased DFS in univariate, HR 1.71 (1.04-2.82), and multivariate analysis, HR 1.75 (1.04-2.92), and the effect was particularly observed among tumours with a T-score ≥10. HPV 16/18 was not associated with improved DFS in neither in univariate nor in multivariate analysis. CONCLUSION Hypoxic gene expression is a prominent prognostic factor for DFS in LACC with SCC histology and should be considered for treatment stratification in clinical trials.
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Affiliation(s)
- Jan Alsner
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Trine Tramm
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
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166
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Reijtenbagh D, Godart J, de Leeuw A, Seppenwoolde Y, Jürgenliemk-Schulz I, Mens J, Nout R, Hoogeman M. Multi-center analysis of machine-learning predicted dose parameters in brachytherapy for cervical cancer. Radiother Oncol 2022; 170:169-175. [DOI: 10.1016/j.radonc.2022.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 11/30/2022]
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167
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Kedves A, Gulyban A, Glavak C, Toller G, Völgyi Z, Faour A, Bálint A, Petrási B, Rák T, Lakosi F. Retrospective validation of coverage probability based simultaneous integrated nodal boost in locally advanced cervical cancer: a mono-institutional analysis. Acta Oncol 2022; 61:202-205. [PMID: 34460340 DOI: 10.1080/0284186x.2021.1971293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Andras Kedves
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
- Institute of Diagnostics, Faculty of Health Sciences, University of Pécs, Pécs, Hungary
| | - Akos Gulyban
- Medical Physics Department, Jules Bordet Institut, Brussels, Belgium
| | - Csaba Glavak
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Gabor Toller
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Zoltán Völgyi
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Amer Faour
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - András Bálint
- Department of Clinical Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Bernadett Petrási
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Tibor Rák
- Department of Gynecology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
| | - Ferenc Lakosi
- Dr József Baka Center, Department of Radiation Oncology, Somogy County Kaposi Mór Teaching Hospital, Kaposvár, Hungary
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
- Institute of Diagnostics, Faculty of Health Sciences, University of Pécs, Pécs, Hungary
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168
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The value of metabolic parameters and textural analysis in predicting prognosis in locally advanced cervical cancer treated with chemoradiotherapy. Strahlenther Onkol 2022; 198:792-801. [PMID: 35072751 PMCID: PMC9402502 DOI: 10.1007/s00066-022-01900-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 01/03/2022] [Indexed: 11/30/2022]
Abstract
Objective The aim of the study was to assess the impact of clinical and metabolic parameters derived from 18F-FDG PET/CT (positron emission tomography–computed tomography) in patients with locally advanced cervical cancer (LACC) on prognosis. Methods Patients with LACC of stage IB2-IVA treated by primary radiochemotherapy followed by brachytherapy were enrolled in this retrospective study. Indexes derived from standardized uptake value (SUV), metabolic tumor volume (MTV), total lesion glycolysis (TLG), and textural features of the primary tumor were measured for each patient. Overall survival (OS) and recurrence-free survival (RFS) rates were calculated according to Kaplan–Meier and survival curves were compared using the log-rank test. Uni- and multivariate analyses were performed using the Cox regression model. Results A total of 116 patients were included. Median follow-up was 58 months (range: 1–129). A total of 36 (31%) patients died. Five-year OS and RFS rates were 69 and 60%, respectively. Univariate analyses indicated that FIGO stage, the presence of hydronephrosis, high CYFRA 21.1 levels, and textural features had a significant impact on OS and RFS. MTV as well as SCC-Ag concentration were also significantly associated with OS. On multivariate analysis, the presence of hydronephrosis, CYFRA 21.1, and sphericity were independent prognostics factors for OS and RFS. Also, SCC-Ag level, MTV, and GLZLM (gray-level zone length matrix) ZLNU (zone length non-uniformity) were significantly associated with OS. Conclusion Classical prognostic factors and tumor heterogeneity on pretreatment PET/CT were significantly associated with prognosis in patients with LACC.
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169
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Hadi I, Eze C, Schönecker S, von Bestenbostel R, Rogowski P, Nierer L, Bodensohn R, Reiner M, Landry G, Belka C, Niyazi M, Corradini S. MR-guided SBRT boost for patients with locally advanced or recurrent gynecological cancers ineligible for brachytherapy: feasibility and early clinical experience. Radiat Oncol 2022; 17:8. [PMID: 35033132 PMCID: PMC8760788 DOI: 10.1186/s13014-022-01981-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 12/31/2021] [Indexed: 11/10/2022] Open
Abstract
Background and purpose Chemoradiotherapy (CRT) followed by a brachytherapy (BT) boost is the standard of care for patients with locally advanced or recurrent gynecological cancer (LARGC). However, not every patient is suitable for BT. Therefore, we investigated the feasibility of an MR-guided SBRT boost (MRg-SBRT boost) following CRT of the pelvis. Material and methods Ten patients with LARGC were analyzed retrospectively. The patients were not suitable for BT due to extensive infiltration of the pelvic wall (10%), other adjacent organs (30%), or both (50%), or ineligibility for anesthesia (10%). Online-adaptive treatment planning was performed to control for interfractional anatomical changes. Treatment parameters and toxicity were evaluated to assess the feasibility of MRg-SBRT boost. Results MRg-SBRT boost was delivered to a median total dose of 21.0 Gy in 4 fractions. The median optimized PTV (PTVopt) size was 43.5ccm. The median cumulative dose of 73.6Gy10 was delivered to PTVopt. The cumulative median D2ccm of the rectum was 63.7 Gy; bladder 72.2 Gy; sigmoid 65.8 Gy; bowel 59.9 Gy (EQD23). The median overall treatment time/fraction was 77 min, including the adaptive workflow in 100% of fractions. The median duration of the entire treatment was 50 days. After a median follow-up of 9 months, we observed no CTCAE ≥ °II toxicities. Conclusion These early results report the feasibility of an MRg-SBRT boost approach in patients with LARGC, who were not candidates for BT. When classical BT-OAR constraints are followed, the therapy was well tolerated. Long-term follow-up is needed to validate the results.
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Affiliation(s)
- Indrawati Hadi
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Chukwuka Eze
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany.
| | - Stephan Schönecker
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Rieke von Bestenbostel
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Paul Rogowski
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Lukas Nierer
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Raphael Bodensohn
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Michael Reiner
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Guillaume Landry
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Partner site Munich, Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK), Partner site Munich, Munich, Germany
| | - Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistrasse 15, 81377, Munich, Germany
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170
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The Fusion of MRI and CT in the Planning of Brachytherapy for Cancer of the Uterine Cervix. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12020634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction: tumors of the uterine cervix are among the most common carcinomas in women. Intracervical brachytherapy is an indispensable part of curative treatment. Although the tumor is significantly more recognizable in MRI than in CT, the practical application of MRI in brachytherapy planning is still difficult. The present study examines the technical possibilities of merging CT and MRI. Materials and Methods: the treatment files and imaging of all 53 patients who had been irradiated by image-guided adaptive brachytherapy (IGABT) between January 2019 and August 2021 at the Department of Radiotherapy of the Hannover Medical School were evaluated, retrospectively. Patients were treated first with an external beam radiotherapy (EBRT) combined with simultaneous chemotherapy. After an average of 4.2 weeks, the preparation for IGABT began. The clinical target volume (CTV) for brachytherapy was contoured first in an MRI acquired before starting EBRT (MRI 1) and once more in a second MRI just before starting IGABT (MRI 2). Then, after inserting the intravaginal applicator, a CT-scan was acquired, and the CTV was contoured in the CT. Finally, the recordings of MRI 1, MRI 2, and the CT were merged, and the congruence of CTVs was quantitatively evaluated. Results: the CTV delineated in MRI 2 was, on average, 28% smaller than that in MRI 1 after an average applied radiation dose of 42 Gy. The CTV delineated in the CT covered an average of no more than 80.8% of the CTV delineated in MRI 2. The congruence of CTVs was not superior in patients with a smit sleeve in the cervical channel, with a 3D-volumetric MRI or with a contrast-enhanced sequence for MRI. Conclusion: the anatomical shape and position of the uterus is significantly changed by introducing a vaginal applicator. Despite the superior delimitability of the tumor in MRI, brachytherapy cannot be reliably planned by the image fusion of an MRI without a vaginal applicator.
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171
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Neoadjuvant Chemotherapy in Locally Advanced Cervical Carcinoma - a Role in Patients with Para-aortic Lymph Node Involvement? A 10-year Institutional Experience. Clin Oncol (R Coll Radiol) 2022; 34:e281-e290. [PMID: 35000828 DOI: 10.1016/j.clon.2021.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/18/2021] [Accepted: 12/10/2021] [Indexed: 12/24/2022]
Abstract
AIMS Overall survival and progression-free survival with concomitant chemoradiotherapy for locally advanced cervical carcinoma have been described as 66% and 58%, respectively, at 5 years. Para-aortic lymph node involvement significantly increases the risk of relapse and death. The role of additional chemotherapy in these patients is as yet undefined. This aim of the present study was to determine the outcome of a cohort of para-aortic lymph node-positive patients treated with neoadjuvant chemotherapy followed by extended-field chemoradiation compared with patients treated with extended-field chemoradiation without neoadjuvant chemotherapy. MATERIALS AND METHODS We reviewed patients with International Federation of Gynaecology and Obstetrics (FIGO) 2014 stage IB1-IVA cervical carcinoma who received extended-field radiotherapy in addition to standard pelvic chemoradiotherapy with or without neoadjuvant chemotherapy, at University College London Hospital (January 2007 to January 2018). Patients in open clinical trials were excluded. RESULTS Overall, 47 patients (15.8% of 298 eligible patients) with pelvic and/or para-aortic lymph node-positive cervical carcinoma received extended-field radiotherapy. Nineteen patients (40.4%) had both neoadjuvant chemotherapy (all received six cycles) and extended-field radiotherapy (median 44 days); 28 (59.6%) patients received extended-field radiotherapy alone (median 43 days). All patients completed radical radiotherapy within 49 days. We observed evidence that patients receiving neoadjuvant chemotherapy and extended-field radiotherapy had a lower risk of death (median follow-up 4.8 years, three deaths) compared with extended-field radiotherapy alone (median follow-up 3.0 years, 11 deaths; hazard ratio = 0.27, 95% confidence interval 0.08-1.00; P = 0.05). Three-year overall survival rates were 83.3% (95% confidence interval 66.1-100) and 64.6% (95% confidence interval 44.6-84.6), respectively. A PFS benefit was seen (hazard ratio 0.25, 95% confidence interval 0.08-0.77; P = 0.02), with 3-year PFS rates of 77.8% (95% confidence interval 58.6-97.0) and 35.0% (95% confidence interval 14.0-56.0), respectively. CONCLUSIONS Our institutional experience suggests that the use of additional systemic therapy before chemoradiotherapy benefits patients with locoregionally advanced (FIGO 2018 IIIC2) cervical cancer. Neoadjuvant chemotherapy was associated with longer overall survival and PFS, without compromising definitive extended-field chemoradiation.
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172
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Yogi V, Lal N, Yadav S, Singh O, Ghori H, Choudhary M, Saxena R, Saxena S. Evaluation of dose–Volume-based image-guided high-dose-rate brachytherapy in carcinoma uterine cervix: A prospective study. JOURNAL OF RADIATION AND CANCER RESEARCH 2022. [DOI: 10.4103/jrcr.jrcr_39_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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173
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Dose-effect relationship between vaginal dose points and vaginal stenosis in cervical cancer: an EMBRACE-I sub-study. Radiother Oncol 2022; 168:8-15. [DOI: 10.1016/j.radonc.2021.12.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 11/22/2022]
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174
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Swamidas J, Jain J, Nesvacil N, Tanderup K, Kirisits C, Schmid M, Agarwal P, Joshi K, Naga P, Ranjan Khadanga C, Gudi S, Gurram L, Chopra S, Mahantshetty U. Dosimetric impact of target definition in brachytherapy for cervical cancer – Computed tomography and trans rectal ultrasound versus magnetic resonance imaging. Phys Imaging Radiat Oncol 2022; 21:126-133. [PMID: 35257030 PMCID: PMC8897631 DOI: 10.1016/j.phro.2022.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 12/23/2021] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
This study evaluated the dosimetric impact of target volume delineation in Computed Tomography (CT) with assistance from Trans Rectal Ultrasound (TRUS) as compared to Magnetic Resonance Imaging (MRI) image-based brachytherapy for cervical cancer. No statistically significant systematic difference was found between MRI and CT for target structures. However, considerable variations were seen on individual patient level which needs to be considered during clinical practice, which also needs further investigations. Current findings provide useful information to optimally utilize various imaging modalities for brachytherapy planning. Although, CT + TRUS based delineation of target volume, appear promising, MRI remains the gold standard.
Background and Purpose Magnetic Resonance Imaging (MRI) based target definition in cervix brachytherapy is limited by its availability, logistics and financial implications, therefore, use of computed tomography (CT) and Trans Rectal UltraSonography (TRUS) has been explored. The current study evaluated the dosimetric impact of CT + TRUS based target volumes as compared to gold standard MRI. Methods and Materials Images of patients (n = 21) who underwent TRUS followed by MRI and CT, were delineated with High-Risk Clinical Target Volume in CT (CTVHR-CT) and in MRI (CTVHR-MR). CTVHR-CT was drawn on CT images with TRUS assistance. For each patient, two treatment plans were made, on MRI and CT, followed by fusion and transfer of CTVHR-MR to the CT images, referred as CTVHR-MRonCT. The agreement between CTVHR-MRonCT and CTVHR-CT was evaluated for dosimetric parameters (D90, D98 and D50; Dose received by 90%, 98% and 50% of the volumes) using Bland-Altman plots, linear regression, and Pearson correlation. Results No statistically significant systematic difference was found between MRI and CT. Mean difference (±1.96 SD) of D90, D98 and D50 between CTVHR-MRonCT and CTVHR-CT was 2.0, 1.2 and 5.6 Gy respectively. The number of patients who have met the dose constraints of D90 > 85 Gy were 90% and 80% in MR and in CT respectively, others were in the borderline, with a minimum dose of 80 Gy. The mean ± SD dose-difference between MR and CT plans for bladder was significant (5 ± 13 Gy; p = 0.12) for D0.1cm3, while others were statistically insignificant. Conclusion CT + TRUS based delineation of CTVHR appear promising, provide useful information to optimally utilize for brachytherapy planning, however, MRI remains the gold standard.
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Affiliation(s)
- Jamema Swamidas
- Department of Radiation Oncology, ACTREC, Tata Memorial Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
- Corresponding author at: Department of Radiation Oncology, Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre, Mumbai, India.
| | - Jeevanshu Jain
- Department of Radiation Oncology, ACTREC, Tata Memorial Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Nicole Nesvacil
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Kari Tanderup
- Department of Clinical Medicine – The Department of Oncology, Aarhus University, Aarhus, Denmark
| | - Christian Kirisits
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Max Schmid
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Priyanka Agarwal
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Homi Bhabha Cancer Hospital, Varanasi, India
| | - Kishore Joshi
- Department of Radiation Oncology, ACTREC, Tata Memorial Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Pushpa Naga
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, India
| | - Chira Ranjan Khadanga
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, India
| | - Shivakumar Gudi
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, India
| | - Lavanya Gurram
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, India
| | - Supriya Chopra
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, India
| | - Umesh Mahantshetty
- Homi Bhabha National Institute, Mumbai, India
- Department of Radiation Oncology, Homi Bhabha Cancer Hospital and Research Centre, Vishakhapatnam, India
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175
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De Sanctis V, Facondo G, Vullo G. Principles and indications of brachytherapy. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00063-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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176
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Goh Y, Kim D, Kim JY, Kim HS, Jeong JH, Lee SU, Youn SH, Oh ES, Ha BR, Yeo AU, Kim M, Shin D, Lee SB, Kim YJ, Kim TH, Lim YK. Active small bowel sparing in intracavitary brachytherapy for cervical cancer. Jpn J Clin Oncol 2021; 52:266-273. [PMID: 34958091 DOI: 10.1093/jjco/hyab197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To propose and evaluate an active method for sparing the small bowel in the treatment field of cervical cancer brachytherapy by prone position procedure. METHODS The prone position procedure consists of five steps: making bladder empty, prone-positioning a patient on belly board, making the small bowel move to abdomen, filling the bladder with Foley catheter and finally turning the patient into the supine position. The proposed method was applied for the treatment of seven cervical cancer patients. Its effectiveness was evaluated and a correlation between the patient characteristics and the volumetric dose reduction of small bowel was also investigated. Brachytherapy treatment plans were built before and after the proposed method, and their dose-volume histograms were compared for targets and organs-at-risk. In this comparison, all plans were normalized to satisfy the same D90% for high-risk clinical target volume. RESULTS For the enrolled patients, the average dose of small bowel was significantly reduced from 75.2 ± 4.9 Gy before to 60.2 ± 4.0 Gy after the prone position procedure, while minor dosimetric changes were observed in rectum, sigmoid and bladder. The linear correlation to body mass index, thickness and width of abdominopelvic cavity and bladder volume were 76.2, 69.7, 28.8 and -36.3%, respectively. CONCLUSIONS The application of prone position procedure could effectively lower the volumetric dose of the small bowel. The dose reduction in the small bowel had a strong correlation with the patient's obesity and abdominal thickness. This means the patients for whom the proposed method would be beneficial can be judiciously selected for safe brachytherapy.
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Affiliation(s)
- Youngmoon Goh
- Department of Radiation Oncology, Asan Medical Center, Seoul, Korea
| | - Dohyeon Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Joo-Young Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Hak Soo Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Jong Hwi Jeong
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Sung Uk Lee
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Sang Hee Youn
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Eun Sang Oh
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Bo Ram Ha
- Department of Radiation Oncology, Hallym University Dongtan Sacred Heart Hospital, Dongtan, Korea
| | - Adam Unjin Yeo
- Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Myeongsoo Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Dongho Shin
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Se Byeong Lee
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Yeon-Joo Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Tae Hyun Kim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
| | - Young Kyung Lim
- Department of Radiation Oncology, National Cancer Center, Goyang, Korea
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177
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Mohammed KE, Nagar T, Pearson SM, Donaldson J, Johnson C. Dosimetric comparison of high-dose rate cervix brachytherapy with and without interstitial needles and the impact on target volume coverage, and organ at risk constraints. J Med Imaging Radiat Oncol 2021; 66:671-677. [PMID: 34939340 DOI: 10.1111/1754-9485.13371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 11/22/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The aim of this audit was to compare the data from the Wellington Blood and Cancer Centre (WBCC) with international reported experience by quantifying the dosimetric impact of interstitial needles on target coverage and organ at risk (OAR) doses. METHODS All patients identified as having had interstitial needles as part of their treatment out of a cohort of 120 radically treated cervical cancer patients between 2013 and 2019 were included. Each patient acted as their own control with two treatment plans optimised for each fraction; the clinically treated plan and a re-optimisation without the use of interstitial needles. Plan optimisation was completed according to the departmental protocol and cumulative equivalent doses for 2 Gy fractions (EQD2) were calculated. RESULTS Eighteen patients were suitable for evaluation. A total of 52 insertions with interstitial needles were performed, of the 148 needles inserted, 119 (80.4%) were loaded. HRCTV D90% coverage mean was EQD2 5.4 Gy (0.5-10.6 Gy) higher for the course containing loaded interstitial needles, while no significant change was observed with regards to OAR doses. This improved coverage is in line with international standards which report 4.4-9.0 Gy. CONCLUSION WBCC's early experience of interstitial cervix brachytherapy has shown our target coverage improvements meet previously published international standards and confirms the value of this technique. This audit supports ongoing use of interstitial needles at the WBCC.
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Affiliation(s)
- Khadiga E Mohammed
- Radiation Treatment Department, Blood and Cancer Centre (WBCC), Wellington Hospital, Wellington, New Zealand
| | - Tanisha Nagar
- Radiation Treatment Department, Blood and Cancer Centre (WBCC), Wellington Hospital, Wellington, New Zealand
| | - Shelley M Pearson
- Radiation Treatment Department, Blood and Cancer Centre (WBCC), Wellington Hospital, Wellington, New Zealand
| | - Jethro Donaldson
- Radiation Treatment Department, Blood and Cancer Centre (WBCC), Wellington Hospital, Wellington, New Zealand
| | - Carol Johnson
- Radiation Treatment Department, Blood and Cancer Centre (WBCC), Wellington Hospital, Wellington, New Zealand
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Chargari C, Peignaux K, Escande A, Renard S, Lafond C, Petit A, Lam Cham Kee D, Durdux C, Haie-Méder C. Radiotherapy of cervical cancer. Cancer Radiother 2021; 26:298-308. [PMID: 34955418 DOI: 10.1016/j.canrad.2021.11.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
External beam radiotherapy and brachytherapy are major treatments in the management of cervical cancer. For early-stage tumours with local risk factors, brachytherapy is a preoperative option. Postoperative radiotherapy is indicated according to histopathological criteria. For advanced local tumours, chemoradiation is the standard treatment, followed by brachytherapy boost, which is not optional. We present the update of the recommendations of the French Society of Oncological Radiotherapy on the indications and techniques for external beam radiotherapy and brachytherapy for cervical cancer.
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Affiliation(s)
- C Chargari
- Département d'oncologie radiothérapie, Gustave-Roussy Cancer Campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France.
| | - K Peignaux
- Département d'oncologie radiothérapie, centre Georges-François-Leclerc, 1, avenue Professeur-Marion, 21000 Dijon, France
| | - A Escande
- Département de radiothérapie, centre Oscar-Lambret, avenue Frédéric-Combemale, 59000 Lille, France
| | - S Renard
- Département de radiothérapie, centre Alexis Vautrin, Vandœuvre-lès-Nancy, France
| | - C Lafond
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - A Petit
- Département de radiothérapie, centre régional de lutte contre le cancer institut Bergonié, 229, cours de l'Argonne, 33000 Bordeaux, France
| | - D Lam Cham Kee
- Département de radiothérapie, centre Alexandre-Lacassagne, avenue de Valombrose, 06000 Nice, France
| | - C Durdux
- Département d'oncologie radiothérapie, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - C Haie-Méder
- Département d'oncologie radiothérapie, centre de cancérologie, Charlebourg la Défense, 65, avenue Foch, 92250 La Garenne-Colombes, France
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Beavan M, Dundas K, Hudson F, Surjan Y, Lau A, Deshpande S, Lim K, Do V. Feasibility of bone marrow sparing volumetric modulated arc therapy to spare active bone marrow in cervical and vaginal cancer patients: a retrospective dosimetric analysis. J Med Radiat Sci 2021; 68:379-388. [PMID: 34288534 PMCID: PMC8655883 DOI: 10.1002/jmrs.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Chemoradiotherapy (CRT) is the standard treatment for locally advanced cervical and vaginal cancer. It is associated with high haematological toxicity (HT) that can lead to treatment interruptions and cancelled chemotherapy cycles, reducing the potential effectiveness of this regimen. Bone marrow sparing (BMS) utilising volumetric modulated arc therapy (VMAT) is one method to reduce dose to the active bone marrow (ABM) so that HT rates are reduced. The aim of this paper was to assess whether BMS-VMAT can effectively spare the ABM whilst maintaining clinically acceptable target and organ-at-risk (OAR) doses. METHODS Twenty gynaecological cancer patients treated with definitive CRT at the Liverpool/Macarthur Cancer Therapy centres between 2015 and 2020 were retrospectively included. ABM was delineated based on fluorodeoxyglucose positron emission tomography (FDG-PET) imaging. Weekly blood tests and ABM dose parameters at the V10Gy, V20Gy, V30Gy, V40Gy and Dmean were assessed on original plans for any potential correlation with grade 2+ HT. Replanned with VMAT for BMS, various dose parameters were compared with the original plan to assess for any significant differences. RESULTS Active bone marrow doses were significantly reduced (P < 0.001 for all parameters) in BMS-VMAT plans, and significant improvements in target and OAR coverage were found compared with the original plans. Compared with VMAT only, target and OARs were comparable. No significant correlations between HT and ABM doses were found. CONCLUSION Bone marrow sparing volumetric modulated arc therapy can significantly reduce dose to the active bone marrow whilst maintaining acceptable target and OAR doses. Future prospective trials are needed to evaluate the clinical impact of BMS on toxicity and compliance.
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Affiliation(s)
- Michaela Beavan
- Medical Radiation Science (MRS)School of Health SciencesThe University of NewcastleCallaghanNew South WalesAustralia
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- Ingham Institute of Applied Medical ResearchLiverpool, SydneyNew South WalesAustralia
| | - Kylie Dundas
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- Ingham Institute of Applied Medical ResearchLiverpool, SydneyNew South WalesAustralia
- South Western Sydney Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Felicity Hudson
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- South Western Sydney Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Yolanda Surjan
- Medical Radiation Science (MRS)School of Health SciencesThe University of NewcastleCallaghanNew South WalesAustralia
| | - Annie Lau
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
| | - Shrikant Deshpande
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- South Western Sydney Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Karen Lim
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- South Western Sydney Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Viet Do
- Liverpool and Macarthur Cancer Therapy CentresSouth West Sydney Local Health DistrictLiverpoolNew South WalesAustralia
- South Western Sydney Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
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Gupta A, Dey T, Rai B, Oinam AS, Gy S, Ghoshal S. Point-Based Brachytherapy in Cervical Cancer With Limited Residual Disease: A Low- and Middle-Income Country Experience in the Era of Magnetic Resonance-Guided Adaptive Brachytherapy. JCO Glob Oncol 2021; 7:1602-1609. [PMID: 34843375 PMCID: PMC8624033 DOI: 10.1200/go.21.00147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To evaluate the clinical outcomes in patients with cervical cancer with limited residual disease at brachytherapy (BT) treated with point-based dose prescription. METHODS Patients with locally advanced squamous cell carcinoma of the cervix treated with computed tomography (CT)-based intracavitary BT were considered for analysis. Patients with good response to external beam radiotherapy and limited residual disease suitable for intracavitary BT alone were included. Postapplication CT scans were performed before each fraction and individual plans were made for each session. The dose per fraction was 9Gy high dose rate, prescribed to point-A. Two sessions were planned, 1 week apart. The organs at risk were contoured, and cumulative dose-volume histograms were computed. Local control, pelvic control, disease-free survival, and overall survival were evaluated and late toxicities were documented. RESULTS Four hundred ninety patients were included. Overall, 79.8% had International Federation of Gynecology and Obstetrics (FIGO) stage IB2 to IIB disease and 20.2% had stage III to IVA disease. Median dose at point A (EQD210Gy) was 74.4 Gy (interquartile range [IQR] 72.3-74.5 Gy) and median D2cc (EQD23Gy) for bladder, rectum, and sigmoid were 82.5 Gy (IQR, 65.5-90.8 Gy), 66.5 Gy (IQR, 60.7-75.7 Gy), and 54.1 Gy (IQR, 50.5-77.3 Gy), respectively. At a median follow-up of 62 (IQR, 33-87) months, the 5-year local and pelvic control rates were 90.1% and 88.3%, respectively. The 5-year disease-free survival was 80% and overall survival was 88%. Rates of grade 3-4 bladder and rectosigmoid toxicities were 6.93% and 4.08%, respectively. CONCLUSION In patients with limited residual disease at BT, point-based dose prescription with CT planning results in good local control and acceptable toxicity. In a resource-constrained setting, patients may be triaged to receive point-based BT or magnetic resonance imaging–guided adaptive BT depending on the extent of residual disease. Point-based brachytherapy can be utilized in cervical cancer with limited residual disease after external RT
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Affiliation(s)
- Ankita Gupta
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Treshita Dey
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Bhavana Rai
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Arun S Oinam
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Srinivasa Gy
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sushmita Ghoshal
- Department of Radiotherapy, Regional Cancer Center, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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181
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Comparative dosimetry of brachytherapy treatment planning between a volume-based plan by CT and a point-based plan by TAUS in CT datasets for brachytherapy. JOURNAL OF RADIOTHERAPY IN PRACTICE 2021. [DOI: 10.1017/s1460396921000595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Aim:
To evaluate comparative dosimetry of brachytherapy treatment planning between a volume-based plan by computed tomography (CT) and a point-based plan by transabdominal ultrasound (TAUS) in CT datasets for brachytherapy.
Materials and methods:
From 2019 to 2021, 59 different datasets of CT images were collected from 38 patients treated by intracavitary brachytherapy with tandem ovoid or tandem ring applicators. At that time, TAUS was performed to prevent uterine perforation and to evaluate topography of the cervix during application. In volume-based planning by CT, the target dose was used to keep the dose at 90% of high-risk clinical target volume (HR-CTV), to give a dose of at least 7Gy, while in the point-based plan by TAUS, the target dose was used to keep the minimum dose to eight cervix reference points (measured by TAUS), to give a dose of at least 7Gy. The doses to targets and organs at risk were evaluated and compared between volume-based planning by CT and the point-based plan by TAUS.
Results:
Of 59 fractions, a tandem ovoid applicator was used in 48 fractions (81·3%). In the volume-based plan by CT, the mean doses to HR-CTV(D90), intermediate-risk clinical target volume (IR-CTV)(D90), bladder(D2cc), rectum(D2cc) and sigmoid colon(D2cc) were 7·0, 3·9, 4·9, 2·9 and 3·3 Gy, respectively, while in the point-based plan by TAUS, the mean doses to HR-CTV(D90), IR-CTV(D90), bladder(D2cc), rectum(D2cc) and sigmoid colon(D2cc) were 8·2, 4·6, 5·9, 3·4 and 3·9 Gy, respectively. The percentages of mean dose differences between TAUS and CT of HR-CTV(D90), IR-CTV(D90), bladder(D2cc), rectum(D2cc) and sigmoid colon(D2cc) were 17·7, 19·5, 20·5, 19·5, 21·3 and 19·8%, respectively. With the target dose to the point-based plan by TAUS (7 Gy to the cervix reference points), this was close to D98 of HR-CTV with a mean percentage of difference of 0·6%.
Findings:
The point-based plan by TAUS showed higher values to targets and organs at risk than the volume-based plan by CT. With the point-based plan by TAUS, it was close to D98 of HR-CTV.
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le Guyader M, Lam Cham Kee D, Thamphya B, Schiappa R, Gautier M, Chand-Fouche ME, Hannoun-Levi JM. High-dose-rate brachytherapy boost for locally advanced cervical cancer: Oncological outcome and toxicity analysis of 4 fractionation schemes. Clin Transl Radiat Oncol 2021; 32:15-23. [PMID: 34816022 PMCID: PMC8592834 DOI: 10.1016/j.ctro.2021.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 12/04/2022] Open
Abstract
Brachytherapy boost is a standard of care for locally advanced cervical cancer. High-dose-rate brachytherapy (HDR-BT) boost procedure is not standardized. The number of implants, fractions, doses and imaging differ in literature. Bi-fractionated HDR-BT in 1 implant is feasible with good oncological outcome. Bi-fractionated HDR-BT dose escalation slightly increases acute toxicity.
Purpose Brachytherapy (BT) boost after radio-chemotherapy (RCT) is a standard of care in the management of locally advanced cervical cancer (LACC). As there is no consensus on high-dose-rate (HDR) BT fractionation schemes, our aim was to report the oncological outcome and toxicity profile of four different schemes using twice-a-day (BID) HDR-BT. Patients and methods This was an observational, retrospective, single institution study for patients with LACC receiving a HDR-BT boost. The latter was performed with a single implant and single imaging done on day 1. The different fractionation schemes were: 7 Gy + 4x3.5 Gy (group 1); 7 Gy + 4x4.5 Gy (group 2); 3x7Gy (group 3) and 3x8Gy (group 4). Local (LFS), nodal (NFS) and metastatic (MFS) recurrence-free survival as well as progression-free survival (PFS) and overall survival (OS) were analyzed. Acute (≤6 months) and late toxicities (>6 months) were reported. Results From 2007 to 2018, 191 patients were included. Median follow-up was 57 months [45–132] and median EQD210D90CTVHR was 84, 82 and 90 Gy for groups 2, 3 and 4 respectively (dosimetric data missing for group 1). The 5-year LFS, NFS, MFS, PFS and OS were 85% [81–90], 83% [79–86], 70% [67–73], 61% [57–64] and 75% [69–78] respectively, with no significant difference between the groups. EQD210D90CTVHR < 85 Gy was a prognostic factor for local recurrence in univariate analysis (p = 0.045). The rates of acute/late grade ≥ 2 urinary, digestive and gynecological toxicities were 9%/15%, 3%/15% and 9%/25% respectively. Conclusion Bi-fractionated HDR-BT boost seems feasible with good oncological outcome and slightly more toxicity after dose escalation.
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Key Words
- BED, biologically effective dose
- BID, twice-a-day
- BMI, body-mass index
- BT, brachytherapy
- Brachytherapy
- CT, computerized tomography
- CTCAE, common terminology criteria for adverse events
- CTV, clinical target volume
- Cervical cancer
- EBRT, external beam radiotherapy
- EMBRACE, image guided intensity modulated External beam radiochemotherapy and MRI based Adaptative BRAchytherapy in locally advanced CErvical cancer
- EQD2Gy, equivalent dose at 2 Gy
- ESTRO, European Society for Radiotherapy and Oncology
- FIGO, International Federation of Gynecology and Obstetrics
- Fractionation scheme
- GEC, groupe européen de curiethérapie
- GTV, gross tumor volume
- HDR, high-dose-rate
- HIV, human immunodeficiency virus
- HR, high-risk
- High-dose-rate
- ICRU, International Commission on Radiation Units and measurements
- IGABT, image-guided adaptative brachytherapy
- IMRT, intensity modulated radiotherapy
- IR, intermediate-risk
- LACC, locally advanced cervical cancer
- LDR, low-dose-rate
- LFS, local recurrence-free survival
- LQ, linear quadratic
- MFS, metastatic recurrence-free survival
- MFU, median follow up
- MRI, magnetic resonance imaging
- NA, not available
- NCI, national cancer institute
- NFS, nodal recurrence-free survival
- OAR, organs at risk
- OS, overall survival
- OTT, overall treatment time
- PDR, pulsed-dose-rate
- PET, positron emission tomography
- PFS, progression-free survival
- PTV, planning target volume
- RCT, radio-chemotherapy
- SCC, squamous cell cancer
- SEER, surveillance, epidemiology and end results
- pt, patient
- pts, patients
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Affiliation(s)
- Maud le Guyader
- Department of Radiation Oncology, Antoine Lacassagne Cancer Center, University of Côte d'Azur, 33 avenue Valombrose, 06189 Nice Cedex 2, Nice, France
| | - Daniel Lam Cham Kee
- Department of Radiation Oncology, Pôle Santé République, Clermont-Ferrand, France
| | - Brice Thamphya
- Department of Statistics, Antoine Lacassagne Cancer Center, University of Côte d'Azur, Nice, France
| | - Renaud Schiappa
- Department of Statistics, Antoine Lacassagne Cancer Center, University of Côte d'Azur, Nice, France
| | - Mathieu Gautier
- Department of Radiation Oncology, Antoine Lacassagne Cancer Center, University of Côte d'Azur, 33 avenue Valombrose, 06189 Nice Cedex 2, Nice, France
| | - Marie-Eve Chand-Fouche
- Department of Radiation Oncology, Antoine Lacassagne Cancer Center, University of Côte d'Azur, 33 avenue Valombrose, 06189 Nice Cedex 2, Nice, France
| | - Jean-Michel Hannoun-Levi
- Department of Radiation Oncology, Antoine Lacassagne Cancer Center, University of Côte d'Azur, 33 avenue Valombrose, 06189 Nice Cedex 2, Nice, France
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Smet S, Spampinato S, Pötter R, Jürgenliemk-Schulz IM, Nout RA, Chargari C, Mahantshetty U, Sturdza A, Segedin B, Bruheim K, Hoskin P, Rai B, Huang F, Cooper R, Van der Steen-Banasik E, Sundset M, Van Limbergen E, Tan LT, Lutgens LCHW, Villafranca E, Pieters BR, Tanderup K, Kirchheiner K. Risk factors for late persistent fatigue after chemoradiotherapy in locally advanced cervical cancer: an analysis from the EMBRACE-I study. Int J Radiat Oncol Biol Phys 2021; 112:1177-1189. [PMID: 34838868 DOI: 10.1016/j.ijrobp.2021.11.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/10/2021] [Accepted: 11/19/2021] [Indexed: 11/17/2022]
Abstract
Objective To evaluate patient- and treatment-related risk factors for late persistent fatigue within the prospective, multi-center XXX study. Methods Fatigue was prospectively assessed (CTCAE v.3) at baseline and during regular follow-up in 993 locally advanced cervical cancer patients, after treatment with chemoradiotherapy and MRI-guided brachytherapy. Risk factors for baseline and late persistent fatigue were evaluated with multivariable logistic regression. Late persistent fatigue was defined, when either G≥1 or G≥2 was scored in at least half of follow-ups. Results Median follow-up was 57 months. Baseline fatigue G≥1/G≥2 (35.8%/6.3%, respectively) was associated with pre-existing co-morbidities, WHO Performance Status, underweight, severe pain and tumor volume. Late persistent G≥1/G≥2 fatigue (36.3%/5.8%, respectively) was associated with patient-related factors (baseline fatigue, younger age, obesity), alongside the size of irradiated volumes and the level of radiation doses from external beam radiotherapy (EBRT) and brachytherapy (EBRT: V43Gy, V57Gy; EBRT+brachytherapy: V60Gy EQD2). Large volume lymph node (LN) boost compared to no LN boost, increased the risk for late persistent fatigue G≥2 by 18% and 5% (in patients with and without baseline fatigue, respectively). The risk for late persistent fatigue G≥1 increased by 7% and 4% with V43Gy <2000cm³ versus >3000cm³ (in patients with and without baseline fatigue, respectively). Late persistent G≥1 fatigue occurred in 13% of patients without late persistent organ-related symptoms (gastro-intestinal, genito-urinary and vaginal), versus 34-43%, 50-58% and 73% in patients suffering from persistent symptoms involving 1,2 or 3 organs, respectively. Conclusion Late persistent fatigue occurs in a considerable number of patients after chemoradiotherapy. It is associated with patient-related factors, the size of volumes irradiated to intermediate and high EBRT and brachytherapy doses, and other persistent organ-related morbidity. These findings support the importance of ongoing efforts to better tailor the target dose and reduce irradiation of healthy tissue without compromising target coverage, using highly conformal EBRT and brachytherapy techniques.
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Affiliation(s)
- Stéphanie Smet
- Department of Radiation Oncology, AZ Turnhout, Turnhout, Belgium; Iridium Cancer Network, Antwerp, Belgium
| | - Sofia Spampinato
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Richard Pötter
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University Hospital of Vienna, Vienna, Austria
| | | | - Remi A Nout
- Department of Radiation Oncology, Leiden University Medical Center, Leiden, The Netherlands; Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, the Netherlands
| | - Cyrus Chargari
- Department of Radiotherapy, Gustave-Roussy, Villejuif, France
| | - Umesh Mahantshetty
- Department of Radiation Oncology, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, India; Homi Bhabha Cancer Hospital and Research Centre, Visakhapatnam, India
| | - Alina Sturdza
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University Hospital of Vienna, Vienna, Austria
| | - Barbara Segedin
- Department of Radiotherapy, Institute of Oncology, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Kjersti Bruheim
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Peter Hoskin
- Mount Vernon Cancer Centre, Mount Vernon Hospital, Northwood, United Kingdom
| | - Bhavana Rai
- Department of Radiotherapy and Oncology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Fleur Huang
- Department of Oncology, Cross Cancer Institute and University of Alberta, Edmonton, Canada
| | - Rachel Cooper
- Leeds Cancer Centre, St James's University Hospital, Leeds, United Kingdom
| | | | - Marit Sundset
- Clinic of Oncology and Women's Clinic, St. Olavs Hospital, Trondheim, Norway
| | - Erik Van Limbergen
- Department of Radiation Oncology, University Hospital Leuven, Leuven, Belgium
| | - Li Tee Tan
- Oncology Centre, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Ludy C H W Lutgens
- Maastricht Radiation Oncology (MAASTRO) clinic, Maastricht, The Netherlands
| | - Elena Villafranca
- Department of Radiation Oncology, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Bradley R Pieters
- Department of Radiation Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Kari Tanderup
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Kathrin Kirchheiner
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University Hospital of Vienna, Vienna, Austria.
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184
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Molecular Markers to Predict Prognosis and Treatment Response in Uterine Cervical Cancer. Cancers (Basel) 2021; 13:cancers13225748. [PMID: 34830902 PMCID: PMC8616420 DOI: 10.3390/cancers13225748] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/12/2021] [Accepted: 11/14/2021] [Indexed: 02/07/2023] Open
Abstract
Uterine cervical cancer is one of the leading causes of cancer-related mortality in women worldwide. Each year, over half a million new cases are estimated, resulting in more than 300,000 deaths. While less-invasive, fertility-preserving surgical procedures can be offered to women in early stages, treatment for locally advanced disease may include radical hysterectomy, primary chemoradiotherapy (CRT) or a combination of these modalities. Concurrent platinum-based chemoradiotherapy regimens remain the first-line treatments for locally advanced cervical cancer. Despite achievements such as the introduction of angiogenesis inhibitors, and more recently immunotherapies, the overall survival of women with persistent, recurrent or metastatic disease has not been extended significantly in the last decades. Furthermore, a broad spectrum of molecular markers to predict therapy response and survival and to identify patients with high- and low-risk constellations is missing. Implementation of these markers, however, may help to further improve treatment and to develop new targeted therapies. This review aims to provide comprehensive insights into the complex mechanisms of cervical cancer pathogenesis within the context of molecular markers for predicting treatment response and prognosis.
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185
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Yu PC, Wu CJ, Nien HH, Lui LT, Shaw S, Tsai YL. Half-beam volumetric-modulated arc therapy in adjuvant radiotherapy for gynecological cancers. J Appl Clin Med Phys 2021; 23:e13472. [PMID: 34783436 PMCID: PMC8803303 DOI: 10.1002/acm2.13472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 08/21/2021] [Accepted: 10/26/2021] [Indexed: 12/24/2022] Open
Abstract
PURPOSE The purpose of this study is to introduce half-beam volumetric-modulated arc therapy (HVMAT), an innovative treatment planning technique from our work, for reducing dose to the organs at risk (OAR) during adjuvant radiotherapy for gynecological cancers. METHODS AND MATERIALS Seventy-two treatment plans of 36 patients with gynecological cancers receiving adjuvant radiotherapy were assessed. Among them, 36 plans were designed using HVMAT and paired with the other 36 traditional volumetric-modulated arc therapy (VMAT) plans for each patient. The main uniqueness of the HVMAT designs was that it consisted of two opposite-shielded half-beam fields rotated inversely in two coplanar arcs, collocating with the specially-devised avoidance structures to enhance the control of the OAR doses. The dose distributions in HVMAT and VMAT were evaluated and compared using the random effects model. RESULTS The ratios of OAR doses in HVMAT compared with VMAT showed a comprehensive OAR dose reduction when using HVMAT (V20Gy : bladder, 0.92; rectum, 0.95; V30Gy : bowel, 0.91; femoral heads, 0.66), except for the ilium (V30Gy : 1.12). The overall mean difference for each OAR across V40Gy , V30Gy , V20Gy , and bowel V15Gy was statistically significant (almost all p < 0.001). In addition, HVMAT promoted a better conformity index, homogeneity index, D2% , and V107% of the planning target volume (all p < 0.001). CONCLUSIONS HVMAT is capable of generating deep double-concave dose distributions with the advantage of reducing dose to several OARs simultaneously. It is highly recommended for pelvic irradiation, especially for treating gynecological cancers in adjuvant radiotherapy.
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Affiliation(s)
- Pei-Chieh Yu
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
| | - Ching-Jung Wu
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.,Department of Radiation Oncology, National Defense Medical Center, Taipei, Taiwan.,Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Hsin-Hua Nien
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.,School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.,Institute of Biomedical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Louis Tak Lui
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan
| | - Suzun Shaw
- Oncology Treatment Center, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Yu-Lun Tsai
- Department of Radiation Oncology, Cathay General Hospital, Taipei, Taiwan.,Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
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186
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Xu Z, Yang L, Ma L, Liu Q, Chang AT, Zhou Y, Zhou C, Kong FM, Chen L. Effect of bladder volume on radiation doses to organs at risk and tumor in cervical cancer during image-guided adaptive brachytherapy and treatment outcome analysis. Mol Clin Oncol 2021; 15:258. [PMID: 34765192 PMCID: PMC8576413 DOI: 10.3892/mco.2021.2420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/26/2021] [Indexed: 11/06/2022] Open
Abstract
There is no consensus in clinical practice on the optimal bladder volume during brachytherapy. The present study aimed to assess the effect of bladder volume on radiation dose to organs at risk and tumor in cervical cancer during image-guided adaptive brachytherapy and clinical outcome. The retrospective study included patients treated at University of Hong Kong-Shenzhen Hospital between January 2015 and July 2019. Patients with International Federation of Gynecology and Obstetrics (2009) stage IB1-IVB (retroperitoneal lymph nodes metastasis only) cervical cancer treated by external beam radiotherapy with concurrent cisplatin followed by brachytherapy were assessed. A total of 421 brachytherapy insertions were analyzed. Every 83 and 90 cm3 (cc) increase in bladder volume led to an incremental raise of 1 Gy in bladder wall minimum dose received by the most irradiated 1 and 2 cc volumes (D1 and D2cc) of the bladder wall, respectively. An increase in bladder volume was associated with increased D1 and D2cc of bladder (both P<0.001, respectively) and rectal wall (P=0.150 and P=0.084, respectively), and decreased D1cc (P=0.003) and D2cc (P=0.001) of sigmoid wall, the maximum doses to the most minimally exposed 90 (D90) and 95% (D95) of the high risk-clinical target volume (HR-CTV; D90, P=0.010; D95, P=0.006). Patients with cumulative HR-CTV D90≤89.6 Gy had shorter median overall survival (OS) than those with cumulative HR-CTV D90>89.6 Gy (42.1 months vs. not reached, P=0.001). Patients with grade 2 acute urinary toxicity had significantly higher cumulative bladder wall D2cc than those with acute urinary toxicity<grade 2 (86.7±3.7 vs. 78.5±7.9 Gy; P=0.001). As the bladder volume increased, the dose to the bladder and rectal wall increase and dose to the sigmoid colon wall and HR-CTV decrease based on intracavitary brachytherapy. The higher dose of HR-CTV predicted better OS and the higher dose received by the bladder wall was associated with more grade 2 acute urinary toxicity.
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Affiliation(s)
- Zhiyuan Xu
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China.,Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Li Yang
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China.,Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, P.R. China
| | - Lingyu Ma
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China
| | - Qin Liu
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China
| | - Amy Ty Chang
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China.,Department of Clinical Oncology, Hong Kong Sanatorium and Hospital, Hong Kong 999077, Hong Kong, SAR
| | - Yong Zhou
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China
| | - Cheng Zhou
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Department of Oncology, Guangdong Sanjiu Brain Hospital, Guangzhou, Guangdong 510510, P.R. China
| | - Feng-Ming Kong
- Oncology Medical Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518053, P.R. China.,Department of Clinical Oncology, The University of Hong Kong, Hong Kong 999077, Hong Kong, SAR, P.R. China.,Department of Radiation Oncology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Longhua Chen
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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187
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Quantitative and qualitative application of clinical drawings for image-guided brachytherapy in cervical cancer patients. J Contemp Brachytherapy 2021; 13:512-518. [PMID: 34759975 PMCID: PMC8565630 DOI: 10.5114/jcb.2021.110273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 08/03/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose Clinical drawings are integral part of image-guided adaptive brachytherapy (IGABT) of cervical cancer. It was used in EMBRACE study protocol as a useful tool. In our study clinical drawings from EMBRACE study were modified to include scales in all the dimensions for more accurate representation of various tumor related volumes. The aim of the present study was to understand patterns of tumor regression and relationship between gross tumor at diagnosis (GTVD) and high-risk clinical target volume (CTV-THR)/intermediate-risk clinical target volume (CTV-TIR) in brachytherapy (BRT), using modified clinical drawings. Material and methods 42 cervical cancer patients, staged as FIGO IIB-IIIB according to EMBRACE study, were enrolled. Advanced schematic 3D mapping diagram (3D-MD) in axial, coronal, and sagittal orientations, with a measurement scale (grid with 10 mm distance) for precise assessment and documentation was applied (through MRI at diagnosis and during brachytherapy). Dimensions, including height, width, and thickness as well as volumes (GTVD, CTV-THR and CTV-TIR) were compared both qualitatively and quantitatively. Results and conclusions We found qualitative and quantitative correlation of the dimensions of final CTV-THR with initial GTVD. Meticulous mapping of tumor volumes can provide useful insights to CTV-THR volume during brachytherapy.
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188
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Set-Up Errors, Organ Motion, Tumour Regression and its Implications on Internal Target Volume-Planning Target Volume During Cervical Cancer Radiotherapy: Results From a Prospective Study. Clin Oncol (R Coll Radiol) 2021; 34:189-197. [PMID: 34736842 DOI: 10.1016/j.clon.2021.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 08/24/2021] [Accepted: 10/19/2021] [Indexed: 11/20/2022]
Abstract
AIMS Uterocervical motions and organ filling during cervical cancer conformal radiotherapy is complex. This prospective, observational study investigated set-up margins (clinical target vo, ume [CTV] to planning target volume [PTV]) for pelvic nodal CTV and internal margin (CTV to internal target volume [ITV]) expansions for uterocervical movements during cervical cancer radiotherapy. MATERIALS AND METHODS During cervical cancer radiotherapy, a daily kilovoltage, cone-beam computed tomography (CBCT) scan was acquired. Bony anatomy-based rigid co-registration and matching to vessels/pelvic nodal region was carried out to document shifts, errors (systematic and random) and to calculate CTV to PTV margins. Subsequently, soft-tissue matching was carried out at the mid-cervical region and uterine fundus to record shifts, errors and to calculate CTV to ITV margins. RESULTS In 67 patients, 1380 CBCT scans were analysed. The mean (±standard deviation) couch shifts for CTV pelvic nodal region in all directions were within 4.5-5.3 mm, systematic and random errors 3.0-3.6 mm and set-up margins of within 10 mm (except anterior margin 10.3 mm). For the mid-cervical region, mean shifts were 4.5-5.5 mm, systematic and random errors 2-4 mm amounting to <10 mm internal margins (CTV-ITV for cervix) and for uterine fundus mean (±standard deviation) shifts were larger in the superior direction (12.1 mm) but 4.0-7.5 mm in other directions, systematic and random errors 2-7 mm amounting to anisotropic margins in various directions (10 mm in anterior-posterior and lateral directions, 12-20 mm in superior-inferior directions) (CTV-ITV for uterine fundus). CONCLUSION Our study suggests anisotropic CTV to ITV and CTV to PTV margins for cervical cancer radiotherapy.
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189
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Shinghal A, Paul S, Chopra S, Gurram L, Scaria L, Kohle S, Rane P, A D, Puravath J, Jain J, Swamidas J, Ghosh J, Gupta S, Rath S, Laskar SG, Agarwal JP. Effect of COVID-19 Pandemic on Gynecological Cancer Radiation During Complete Nationwide Lockdown: Observations and Reflections From Tertiary Care Institute in India. Adv Radiat Oncol 2021; 6:100725. [PMID: 34075350 PMCID: PMC8159674 DOI: 10.1016/j.adro.2021.100725] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 04/29/2021] [Accepted: 05/07/2021] [Indexed: 12/28/2022] Open
Abstract
PURPOSE To report real-world compliance to radiation in gynecologic cancers during the complete lockdown phase of COVID-19 pandemic. METHODS AND MATERIALS From March 23, 2020, until June 30, 2020, complete lockdown was imposed in India. During this period there was restructuring of cancer care and radiation oncology department due to operational policies prevalent in the institution, and the care for gynecological cancer was based on the evolving international recommendations. Institutional review board approval was obtained to audit patterns of care during the complete lockdown phase. Descriptive variables were used to report on patient characteristics, compliance, delays, toxicity, and observed deviations in recommended care. RESULTS During the lockdown period spanning 100 days, treatment of 270 and telephonic follow-up of 1103 patients with gynecological cancer was undertaken. Of 270 new patients, due to travel restrictions, 90 patients were referred to the facilities in vicinity of their residence. Of the remaining 180 patients, 138 were planned for complete treatment at our institution and 42 were referred to our center for brachytherapy. Of 138 patients, only 106 (76%) completed the planned external radiation. Twenty-four (26%) patients completed full course of concurrent chemotherapy, 11 (12%) received chemotherapy dose reduction, and 57 (62%) received no concurrent chemotherapy. Treatment delay of up to 3 weeks was noted in 8.6% patients due to COVID-19 infection. No grade 4 to 5 acute sequelae were observed. No excess adverse effects were observed in high-risk population. Low rate of symptom burden was observed among 1103 patients on telephonic follow-up. With 100 (9.6%) patients reporting symptoms, among these, 54% (54 of 100) had complete resolution of symptoms within 4 weeks of teleconsultation, and 10% had disease progression. CONCLUSIONS Low compliance with planned treatment was observed for radiation and concurrent chemotherapy due to lockdown and fear of contracting COVID-19 and will likely lead to increased risk of cancer-related mortality. Rapid restructuring of care is needed to prevent the same as COVID-19 pandemic further evolves.
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Affiliation(s)
- Abhishek Shinghal
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Sonz Paul
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Supriya Chopra
- Department of Radiation Oncology, Advanced Centre For Treatment and Education in cancer, Tata Memorial Centre (ACTREC), Parel, Homi Bhabha National Institute, Mumbai, India
- Corresponding author: Supriya Chopra
| | - Lavanya Gurram
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Libin Scaria
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Satish Kohle
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Priyanka Rane
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Dheera A
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - John Puravath
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Jivanshu Jain
- Department of Radiation Oncology, Advanced Centre For Treatment and Education in cancer, Tata Memorial Centre (ACTREC), Parel, Homi Bhabha National Institute, Mumbai, India
| | - Jamema Swamidas
- Department of Radiation Oncology, Advanced Centre For Treatment and Education in cancer, Tata Memorial Centre (ACTREC), Parel, Homi Bhabha National Institute, Mumbai, India
| | - Jaya Ghosh
- Department of Medical Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Mumbai, India
| | - Sudeep Gupta
- Department of Medical Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Mumbai, India
| | - Sushmita Rath
- Department of Medical Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Mumbai, India
| | - Sarbani Ghosh Laskar
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
| | - Jai Prakash Agarwal
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Homi Bhabha National Institute, Mumbai, India
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190
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Martín-Tovar EA, Badillo-Alvarado AH, Cocom-Poot LE. Dosimetric study of a hybrid plan technique for external beam radiotherapy in patients with cervical cancer. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2021; 60:653-662. [PMID: 34363120 DOI: 10.1007/s00411-021-00931-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/31/2021] [Indexed: 06/13/2023]
Abstract
The aim of this study was to investigate the effect of a hybrid technique which results from combining intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) for the treatment of cervical cancer patients. Plans made with the hybrid technique and pure IMRT and VMAT were retrospectively compared in 20 patients with cervical cancer at different stages. All plans were made using the same contours based on the original computed tomography (CT) scans. Conformity (CI) and homogeneity (HI) indices of the planning target volumes (PTVs) were calculated for each technique in order to evaluate plan quality. All techniques were compared in terms of dose to organs at risk (OARs), number of monitor units (MUs) and treatment time. It turned out that plans made with the hybrid technique had improved dose conformity and homogeneity compared to plans made only with IMRT and VMAT (p < 0.001). Regarding the OARs, the maximum dose (Dmax) delivered to the bladder, rectum and femoral heads was lower for the hybrid plans compared to the IMRT and VMAT plans (p < 0.001). The volumes irradiated to doses of 50 Gy (V50Gy) for rectum, bladder and bowel were lower for the hybrid plans (p < 0.001, p = 0.002). Furthermore, the treatment time and MU values for the hybrid plans were found to be between of the values for the IMRT and VMAT plans. It is concluded that, as compared to IMRT and VMAT plans, the hybrid plan technique allowed a better conformity and homogeneity for the dose distribution in the PTV and a dose reduction to the OARs.
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Affiliation(s)
- E A Martín-Tovar
- División de Oncología y Uronefrología, Departamento de Radioterapia, Unidad Médica de Alta Especialidad, Hospital de Especialidades del Centro Médico Nacional "Ignacio García Téllez", Instituto Mexicano del Seguro Social, CP 97150, Mérida, Yucatán, México.
| | - A H Badillo-Alvarado
- División de Oncología y Uronefrología, Departamento de Radioterapia, Unidad Médica de Alta Especialidad, Hospital de Especialidades del Centro Médico Nacional "Ignacio García Téllez", Instituto Mexicano del Seguro Social, CP 97150, Mérida, Yucatán, México
| | - L E Cocom-Poot
- División de Oncología y Uronefrología, Departamento de Radioterapia, Unidad Médica de Alta Especialidad, Hospital de Especialidades del Centro Médico Nacional "Ignacio García Téllez", Instituto Mexicano del Seguro Social, CP 97150, Mérida, Yucatán, México
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191
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Arya R, Giurcanu M, Jutzy JM, Peters P, Daily EW, Golden DW, McCall AR, Howard AR, Hasan Y, Son CH. Local Control and Use of External Beam Parametrial Boost in the Era of Image-Guided Brachytherapy for Locally Advanced Cervical Cancer. Am J Clin Oncol 2021; 44:565-571. [PMID: 34456239 DOI: 10.1097/coc.0000000000000863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Historically, external beam parametrial boost (EBPB) has been used in locally advanced cervical cancers to supplement radiation dose. However, it has become controversial in the era of image-guided brachytherapy. Modern 3D imaging and brachytherapy techniques have improved delineation and coverage of tumor. Outcomes with and without parametrial boost were analyzed. METHODS Women with cervical cancer involving the parametria (clinically or radiographically) diagnosed between 2001 and 2017 were identified. Clinicopathologic and treatment features, survival and patterns of failure data were collected. Univariate and multivariable data analysis was performed to evaluate association of these variables, including parametrial boost, with local failure-free survival and overall survival. Competing risks analysis was performed for cumulative incidence of local failure, with death and other failures treated as competing events. RESULTS A total of 100 women were identified (median follow-up 26.8 mo). Forty-one (41%) received EBPB; these patients were less likely to have received magnetic resonance imaging, positron emission tomography, interstitial, or high-dose rate brachytherapy. Magnetic resonance imaging, positron emission tomography, dose rate, and treatment era were highly correlated (Cramer's V: 0.43 to 0.68, P<0.01). Two-year overall survival and local failure were 78% and 12% for the entire cohort. While the use of EBPB was not associated with any outcome on multivariable analysis, treatment year after 2009 was highly associated with improved outcomes in all models. CONCLUSIONS In this study, omission of EBPB did not compromise local control or survival in the modern era, supporting a decreased need for standardized use of parametrial boost.
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Affiliation(s)
| | | | - Jessica M Jutzy
- Department of Radiation Medicine, Loma Linda University Health, Loma Linda
| | - Pamela Peters
- Department of Obstetrics and Gynecology, University of California, San Francisco, CA
| | | | | | - Anne R McCall
- Radiation and Cellular Oncology, University of Chicago
| | | | - Yasmin Hasan
- Radiation and Cellular Oncology, University of Chicago
| | - Christina H Son
- Radiation and Cellular Oncology, University of Chicago
- Department of Radiation Oncology, University of Illinois, Chicago, IL
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192
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Shah C, Vicini F, Beriwal S, Thaker N, Frank SJ, Rossi P, Orio P, Chang AJ, Joshi N, Campbell SR, Naghavi A, Chao S, Kamrava M, Deufel CL, Mourtada F, Suh JH. American brachytherapy society radiation oncology alternative payment model task force: Quality measures and metrics for brachytherapy. Brachytherapy 2021; 21:63-74. [PMID: 34732290 DOI: 10.1016/j.brachy.2021.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/26/2021] [Accepted: 10/05/2021] [Indexed: 12/21/2022]
Abstract
PURPOSE Brachytherapy is an essential technique to deliver radiation therapy and is involved in the treatment of multiple disease sites as monotherapy or as an adjunct to external beam radiation therapy. With a growing focus on the cost and value of cancer treatments as well new payment models, it is essential that standardized quality measures and metrics exist to allow for straightforward assessment of brachytherapy quality and for the development of clinically significant and relevant clinical data elements. We present the American Brachytherapy Society consensus statement on quality measures and metrics for brachytherapy as well as suggested clinical data elements. METHODS AND MATERIALS Members of the American Brachytherapy Society with expertise in disease site specific brachytherapy created a consensus statement based on a literature review and clinical experience. RESULTS Key quality measures (ex. workup, clinical indications), dosimetric metrics, and clinical data elements for brachytherapy were evaluated for each modality including breast cancer, cervical cancer, endometrial cancer, prostate cancer, keratinocyte carcinoma, soft tissue sarcoma, and uveal melanoma. CONCLUSIONS This consensus statement provides standardized quality measures and dosimetric quality metrics as well as clinical data elements for each disease site to allow for standardized assessments of brachytherapy quality. Moving forward, a similar paradigm can be considered for external beam radiation therapy as well, providing comprehensive radiation therapy quality measures, metrics, and clinical data elements that can be incorporated into new payment models.
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Affiliation(s)
- Chirag Shah
- Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH.
| | | | - Sushil Beriwal
- Department of Radiation Oncology, UPMC Hillman cancer Center, Pittsburgh, PA
| | - Nikhil Thaker
- Division of Radiation Oncology, Arizona Oncology, Tucson, AZ
| | - Steven J Frank
- Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX
| | | | - Peter Orio
- Department of Radiation Oncology, Dana Farber Cancer Institute, Boston, MA
| | - Albert J Chang
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA
| | - Nikhil Joshi
- Department of Radiation Oncology, Rush University, Chicago, IL
| | - Shauna R Campbell
- Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Arash Naghavi
- Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL
| | - Samuel Chao
- Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Mitchell Kamrava
- Department of Radiation Oncology, Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Firas Mourtada
- Department of Radiation Oncology, Helen F. Graham Cancer Center, ChristianaCare, Newark, DE
| | - John H Suh
- Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
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193
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Engineer R, Chopra S, Shukla R, Mahantshetty U, Phurailatpam R, Ghadi Y, Gupta S, Shrivastava SK. Computed Tomography-Based Interstitial Brachytherapy for Recurrent Cervical Carcinoma in the Vaginal Apex. Clin Oncol (R Coll Radiol) 2021; 34:e1-e6. [PMID: 34716084 DOI: 10.1016/j.clon.2021.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 06/30/2021] [Accepted: 09/17/2021] [Indexed: 11/03/2022]
Abstract
AIMS To determine the factors influencing the outcomes of patients with recurrences post-hysterectomy for cervical cancers treated with external beam radiotherapy (EBRT) and interstitial brachytherapy. MATERIALS AND METHODS This prospective study accrued 90 patients between October 2008 and May 2014. All patients had had a prior hysterectomy and were diagnosed with recurrent vaginal apex cancers with squamous cell carcinomas. All underwent EBRT of 50 Gy (2 Gy/fraction) using tomotherapy-based image-guided intensity-modulated radiotherapy with concurrent chemotherapy of weekly cisplatin (40 mg/m2) followed by high dose rate interstitial brachytherapy boost of 20 Gy (4 Gy/fraction twice a day). Local relapse, disease-free and overall survival were determined. RESULTS At a median follow-up of 74 months (4-123 months), 10/90 (11%) patients had local failure as the first site of relapse and 12/90 (13.3%) had first distant relapse. Only one patient had synchronous local and distant relapse. The 7-year local relapse-free, disease-free and overall survival were 87.6, 68.3 and 68.3%, respectively. Grade 2 and 3 rectal toxicity were seen in 5.6 and 3.1% of patients, respectively. Among these, two (2.2%) patients underwent temporary diversion colostomy due to vaginal sigmoid and rectovaginal fistula. Grade 2 and 3 bladder toxicity were seen in 5.6 and 1.1% of patients, respectively. In summary, the lateral disease extent (P = 0.048) and the presence of nodal disease at diagnosis (P = 0.08) had a statistically significant or borderline impact on local relapse without any impact on disease-free survival. Tumour size in itself did not affect overall survival. CONCLUSION With the integration of EBRT and interstitial brachytherapy, most vaginal apex recurrences can be salvaged. An excellent local control and survival is achievable using intensity-modulated radiotherapy with image guidance and concurrent chemotherapy followed by high dose rate interstitial brachytherapy.
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Affiliation(s)
- R Engineer
- Department of Radiation Oncology, Tata Memorial Hospital, Mumbai, India.
| | - S Chopra
- Department of Radiation Oncology, Tata Memorial Hospital, Mumbai, India
| | - R Shukla
- Department of Radiation Oncology, Tata Memorial Hospital, Mumbai, India
| | - U Mahantshetty
- Department of Radiation Oncology, Tata Memorial Hospital, Mumbai, India
| | - R Phurailatpam
- Department of Medical Physics, Tata Memorial Hospital, Mumbai, India
| | - Y Ghadi
- Department of Medical Physics, Tata Memorial Hospital, Mumbai, India
| | - S Gupta
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, India
| | - S K Shrivastava
- Department of Radiation Oncology, Tata Memorial Hospital, Mumbai, India
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Validation and applicability of para-aortic lymph nodal contouring atlas in cervical cancer. Radiother Oncol 2021; 165:32-36. [PMID: 34710510 DOI: 10.1016/j.radonc.2021.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 10/12/2021] [Accepted: 10/16/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND PURPOSE CTV delineation guidelines for the para-aortic nodal region for patients with cervical cancer have been proposed (Keenan et al., 2018). The purpose of this study was to validate these guidelines with the use of CT datasets of cervical cancer patients with macroscopic PALN treated with definitive (chemo)radiation (CTRT) at our center. MATERIALS AND METHODS Planning CT datasets of 71 cervical cancer patients with gross PA nodal disease treated with EFRT were used. Two hundred and two PALN were identified based on size and morphology on diagnostic CECT, PET CT, or histologically proven PALN. LN regions were divided into upper, middle, and lower and based on their relation to the aorta and IVC. Macroscopic PALN were contoured, and the CTV for PALN irradiation was generated based on the proposed guidelines on ECLIPSE (Version 13.5). The centre of mass (COMN) was calculated for each gross PALN. The evaluation was done to review the presence of COMN in relation to the CTV PALN. RESULTS The most common location of PALN was Left para-aortic (105 LN-52%), Aortocaval (55 LN-27.2%), and Precaval (14 LN-6.9%). Lower PALN were the commonest (104 LN-51.5%). Ninety-three were middle PALN (46%), and 5 were upper PALN (2.5%). After excluding upper PALN, COMN for 11 PALN (5.5%) were outside the CTV while 20 were junctional. CONCLUSION Our study shows that more than 95% of PALN in this patient cohort were covered using these guidelines with the addition of an extra 5 mm margin laterally on the left.
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A novel use of 3D-printed template in vaginal HDR brachytherapy. Brachytherapy 2021; 21:238-243. [PMID: 34702651 DOI: 10.1016/j.brachy.2021.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/13/2021] [Accepted: 09/19/2021] [Indexed: 11/22/2022]
Abstract
PURPOSE The High-Dose-Rate (HDR) vaginal cylinder treatment is typically designed using the initial CT, while the subsequent implants are verified using rudimentary methods (i.e., visual inspection, ruler measurements, etc.) and/or X-ray imaging. We are proposing the use of a 3D-printed individualized template that could provide simple and reproducible vaginal cylinder insertion. MATERIAL AND METHODS Six patients were included in the study with prescriptions of 6 Gy/fraction for 2 to 5 fractions (total 27 treatments). The first 1 to 2 treatments were delivered without the template and the rest with the CT-based 3D-printed templates. Cone beam CTs (CBCTs) were acquired to verify the cylinder placement for all treatments. D2cc of the bladder and rectum are recorded on both planning CT and the following on-treatment CBCTs. RESULTS By using the templates, the tip position variation on average (±1 SD) reduced from 0.8±0.5 cm to 0.6±0.4 cm, and angular difference decreased from 5.3±3.5° to 4.7±2.4°. The pitch and yaw deviation are reduced from 0.9 ± 5.8° and 0.4±2.9° to 0.0±3.9° and -0.2±3.0°, respectively. The deviation of D2cc to bladder from the plan reduced from 6±4% to 5±3%, and rectum from 5±2% to 4±4%. CONCLUSION The 3D-printed patient-specific cylinder templates could potentially improve the geometrical reproducibility of cylinder treatments at no cost of additional imaging. The D2cc for the bladder and rectum are determined by the treatment length rather than their respective volumes.
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Taggar AS, Martell K, Leung E, Banerjee R, Fortin I, Doll CM. Changing Landscape of Radiation Therapy for Advanced Cervical Cancer With a Focus on Interstitial Brachytherapy: A Canadian Practice Patterns Survey. Pract Radiat Oncol 2021; 12:145-154. [PMID: 34678519 DOI: 10.1016/j.prro.2021.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 11/27/2022]
Abstract
PURPOSE To document the evolution of radical radiation therapy and interstitial brachytherapy (ISBT) utilization practice patterns across Canada, including use of imaging, technical details, and usage of anesthesia/analgesia, and to compare advanced (AC) versus nonadvanced (nAC) brachytherapy (BT) center practices. METHODS AND MATERIALS All Canadian centers with BT services were identified. One gynecology radiation oncologist per center was sent a 64-item questionnaire regarding the center's practice for patients with cervical cancer. Centers were categorized based on availability of advanced BT expertise (AC) versus those referring patients to other centers for advanced BT techniques (nAC). Aggregate responses are reported and compared with practice patterns identified in our previous survey. Descriptive statistics were used to summarize data, and the Fisher exact test, Fisher-Freeman-Halton, or Mann-Whitney-Wilcox test was used for comparisons. RESULTS Thirty-seven of 38 respondents completed the survey (response rate: 97.4%). Compared with 2015, there has been an increase in utilization of magnetic resonance imaging as the sole imaging modality for BT planning: 3 of 26 (11%) versus 12 of 37 (32%; P = .03). The number of centers with the ability to perform ISBT increased in 2020 compared with 2015 (26/37 [70%] vs 13/26 [50%], P = .710); this trend is likely due to an increase in use of hybrid (Vienna, Utrecht, Venezia) applicators (36% [2015] vs 84% [2020]; P = .175). Fifteen (40%) centers had the ability to perform perineal-ISBT (P-ISBT). Sixteen and 21 centers were identified as AC and nAC, respectively. All 16 AC centers had the ability to perform ISBT, compared with only 10 nAC centers (P < .001). A higher proportion of AC centers had fellowship-trained radiation oncologists performing brachytherapy, compared with nAC centers (94% vs 14%, P < .001). In terms of anesthesia, conscious sedation was the only available choice at low-patient-volume centers (8/37, 21%) performing intracavitary BT only. Those performing ISBT had choice of general, spinal, and epidural anesthesia. CONCLUSIONS In Canada, high-quality, modern management radiation therapy practices are consistently offered to patients with cervical cancer. There is a trend toward increased utilization of ISBT. Accumulation of evidence toward the use of ISBT, increased utilization of high-quality imaging modalities such as magnetic resonance imaging, and availability of hybrid applicators are potential contributors for this upward trend.
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Affiliation(s)
- Amandeep S Taggar
- Department of Radiation Oncology, University of Toronto, Toronto, Canada.
| | - Kevin Martell
- Division of Radiation Oncology, Department of Oncology, University of Calgary, Calgary, Canada
| | - Eric Leung
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Robyn Banerjee
- Division of Radiation Oncology, Department of Oncology, University of Calgary, Calgary, Canada
| | - Israel Fortin
- Department of Radiation Oncology, Hôpital Maisonneuve-Rosemont, Centre affilié à l'Université de Montréal, Montréal, Canada
| | - Corinne M Doll
- Division of Radiation Oncology, Department of Oncology, University of Calgary, Calgary, Canada
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PROTECT: Prospective Phase-II-Trial Evaluating Adaptive Proton Therapy for Cervical Cancer to Reduce the Impact on Morbidity and the Immune System. Cancers (Basel) 2021; 13:cancers13205179. [PMID: 34680328 PMCID: PMC8533850 DOI: 10.3390/cancers13205179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/01/2021] [Accepted: 10/11/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Chemoradiation with photon radiotherapy is very effective as a locally advanced cervical cancer (LACC) treatment. However, the majority of women with LACC experience treatment-related toxicity involving the gastrointestinal and urogenital tracts and the immune system. Compared to that of photon therapy, proton therapy substantially reduces undesired dose to the organs around the tumor, leading to a decrease in radiotherapy-related side-effects. At present, few studies on proton therapy in patients with LACC will be conducted. The PROTECT trial aims to evaluate the differences in side effects between photon therapy and proton therapy, both combined with chemotherapy, for LACC. Fifteen patients will be enrolled per treatment group. Information will be collected on the differences in dose to the organs around the tumor, treatment-related side effects, and the impact on the immune system. This information will be used to assess the potential of proton therapy as an innovative treatment for LACC. Abstract External beam radiation therapy (EBRT) with concurrent chemotherapy followed by brachytherapy is a very effective treatment for locally advanced cervical cancer (LACC). However, treatment-related toxicity is common and reduces the patient’s quality of life (QoL) and ability to complete treatment or undergo adjuvant therapies. Intensity modulated proton therapy (IMPT) enables a significant dose reduction in organs at risk (OAR), when compared to that of standard intensity-modulated radiation therapy (IMRT) or volumetric-modulated arc therapy (VMAT). However, clinical studies evaluating whether IMPT consequently reduces side effects for LACC are lacking. The PROTECT trial is a nonrandomized prospective multicenter phase-II-trial comparing clinical outcomes after IMPT or IMRT/VMAT in LACC. Thirty women aged >18 years with a histological diagnosis of LACC will be included in either the IMPT or IMRT/VMAT group. Treatment includes EBRT (45 Gy in 25 fractions of 1.8 Gy), concurrent five weekly cisplatin (40 mg/m2), and 3D image (MRI)-guided adaptive brachytherapy. The primary endpoint is pelvic bones Dmean and mean bowel V15Gy. Secondary endpoints include dosimetric parameters, oncological outcomes, health-related QoL, immune response, safety, and tolerability. This study provides the first data on the potential of IMPT to reduce OAR dose in clinical practice and improve toxicity and QoL for patients with LACC.
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198
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Kallis K, Mayadev J, Covele B, Brown D, Scanderbeg D, Simon A, Frisbie-Firsching H, Yashar CM, Einck JP, Mell LK, Moore KL, Meyers SM. Evaluation of dose differences between intracavitary applicators for cervical brachytherapy using knowledge-based models. Brachytherapy 2021; 20:1323-1333. [PMID: 34607771 DOI: 10.1016/j.brachy.2021.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/12/2021] [Accepted: 08/14/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Currently, there is a lack of patient-specific tools to guide brachytherapy planning and applicator choice for cervical cancer. The purpose of this study is to evaluate the accuracy of organ-at-risk (OAR) dose predictions using knowledge-based intracavitary models, and the use of these models and clinical data to determine the dosimetric differences of tandem-and-ring (T&R) and tandem-and-ovoids (T&O) applicators. MATERIALS AND METHODS Knowledge-based models, which predict organ D2cc, were trained on 77/75 cases and validated on 32/38 for T&R/T&O applicators. Model performance was quantified using ΔD2cc=D2cc,actual-D2cc,predicted, with standard deviation (σ(ΔD2cc)) representing precision. Model-predicted applicator dose differences were determined by applying T&O models to T&R cases, and vice versa, and compared to clinically-achieved D2cc differences. Applicator differences were assessed using a Student's t-test (p < 0.05 significant). RESULTS Validation T&O/T&R model precision was 0.65/0.55 Gy, 0.55/0.38 Gy, and 0.43/0.60 Gy for bladder, rectum and sigmoid, respectively, and similar to training. When applying T&O/T&R models to T&R/T&O cases, bladder, rectum and sigmoid D2cc values in EQD2 were on average 5.69/2.62 Gy, 7.31/6.15 Gy and 3.65/0.69 Gy lower for T&R, with similar HRCTV volume and coverage. Clinical data also showed lower T&R OAR doses, with mean EQD2 D2cc deviations of 0.61 Gy, 7.96 Gy (p < 0.01) and 5.86 Gy (p < 0.01) for bladder, rectum and sigmoid. CONCLUSIONS Accurate knowledge-based dose prediction models were developed for two common intracavitary applicators. These models could be beneficial for standardizing and improving the quality of brachytherapy plans. Both models and clinical data suggest that significant OAR sparing can be achieved with T&R over T&O applicators, particularly for the rectum.
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Affiliation(s)
- Karoline Kallis
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Jyoti Mayadev
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Brent Covele
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Derek Brown
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Daniel Scanderbeg
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Aaron Simon
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Helena Frisbie-Firsching
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Catheryn M Yashar
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - John P Einck
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Loren K Mell
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Kevin L Moore
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA
| | - Sandra M Meyers
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, San Diego, CA.
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Gul OV, Inan G, Basaran H. Impact of different treatment plans on EQD 2 for intracavitary brachytherapy of cervical cancer. J Egypt Natl Canc Inst 2021; 33:28. [PMID: 34604928 DOI: 10.1186/s43046-021-00084-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/18/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cancer is one of the leading causes of death worldwide. According to GLOBOCAN estimates, there were 341,831 deaths from cervical cancer in 185 countries in 2020. The aim of this study was to compare equieffective dose (EQD2) at 2 Gy per fraction by using dose volume histograms (DVHs) derived from external beam radiotherapy (EBRT) and high-dose rate brachytherapy (HDR-BRT) treatment plans used in cervical cancer radiotherapy. METHODS Fifteen patients with stage IIB-IIIB cervical cancer were included in this retrospective study. Treatment with three-dimensional conformal radiotherapy (3D-CRT) or intensity-modulated radiotherapy (IMRT) was planned for all patients in 28 fractions, with a total of 50.4 Gy to be delivered to the whole pelvic region. After EBRT, manual optimization (MO) or inverse optimization (IO) HDR-BRT plans were created in 4 fractions with a total of 28 Gy. The plans obtained were grouped as IMRT + IO, IMRT + MO, 3DCRT + IO, and 3DCRT + MO by calculating EQD2s among these plans. D90, D95, and D98 values were compared in all plans for CTVHR total EQD2. In addition, EQD2 values for critical organs at risk (OARs) such as rectum, bladder, small intestine, and sigmoid were compared in all plans for volumes of 2 cm3, 1 cm3, and 0.1 cm3, respectively. RESULTS There was no significant difference between the treatment groups in terms of CTVHR D90 and CTVIR D90 values; However, CTVHR D95 (p = 0.000) and CTVHR D98 (p = 0.000) values were found to be better in IMRT + IO technique. The IMRT + IO technique provided better protection for 2 cm3, 1 cm3, and 0.1 cm3 volumes of OARs compared to other techniques. CONCLUSIONS Considering all parameters such as CTVHR, CTVIR, rectum, bladder, small intestine, and sigmoid, combination of IMRT + IO treatment option was found to be significantly superior in total EQD2 calculations compared to other plans.
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Affiliation(s)
- Osman Vefa Gul
- Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey.
| | - Gokcen Inan
- Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Hamit Basaran
- Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey
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Harkenrider MM, Albuquerque K, Brown D, Kamrava M, King M, Mourtada F, Orio P, Patel R, Price M, Rassiah P, Solanki AA, Small W, Schechter NR. ACR-ABS-ASTRO practice parameter for the performance of radionuclide-based high-dose-rate brachytherapy. Brachytherapy 2021; 20:1071-1082. [PMID: 34588143 DOI: 10.1016/j.brachy.2021.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 08/17/2021] [Indexed: 11/16/2022]
Abstract
PURPOSE This practice parameter aims to detail the processes, qualifications of personnel, patient selection, equipment, patient and personnel safety, documentation, and quality control and improvement necessary for an HDR brachytherapy program. METHODS AND MATERIALS This practice parameter was revised collaboratively by the American College of Radiology (ACR), the American Brachytherapy Society (ABS), and the American Society for Radiation Oncology (ASTRO). RESULTS Brachytherapy is a radiotherapeutic modality in which radionuclide or electronic sources are used to deliver a radiation dose at a distance of up to a few centimeters by surface, intracavitary, intraluminal, or interstitial application. Brachytherapy alone or combined with external beam radiotherapy plays an important role in the management and treatment of patients with cancer. High-dose-rate (HDR) brachytherapy uses radionuclides, such as iridium-192, at dose rates of ≥12 Gy/hr to a designated target point or volume, and it is an important treatment for a variety of malignant and benign conditions. Its use allows for application of high doses of radiation to defined target volumes with relative sparing of adjacent critical structures. CONCLUSIONS HDR brachytherapy requires detailed attention to personnel, equipment, patient and personnel safety, and continuing staff education. Coordination between the radiation oncologist and treatment planning staff and effective quality assurance procedures are important components of successful HDR brachytherapy programs.
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Affiliation(s)
| | - Kevin Albuquerque
- UT Southwestern Medical Center, Simmons Comprehensive Cancer Center, Dallas, TX
| | | | | | - Martin King
- Brigham and Women's Hospital/Dana-Farber Cancer Institute, Boston, MA
| | | | - Peter Orio
- Brigham and Women's Hospital/Dana-Farber Cancer Institute, Boston, MA
| | | | - Michael Price
- Columbia University Irving Medical Center, New York, NY
| | - Prema Rassiah
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | | | - William Small
- Stritch School of Medicine, Loyola University Chicago, Maywood, IL
| | - Naomi R Schechter
- Keck Medical Center of USC, Norris Comprehensive Cancer, Center, University of Southern California, Los Angeles, CA
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