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Shiao JC, Shen X. Contemporary Role of Radiation Therapy in Testicular Cancer. Urol Clin North Am 2024; 51:395-405. [PMID: 38925742 DOI: 10.1016/j.ucl.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Testicular cancer is a rare but curable male malignancy. Seminoma represents the majority of germ cell tumors and is considered radiation sensitive. Radiation treatment plays a role in adjuvant therapy after orchiectomy of stage I, IIA, and IIB seminomas. Radiation dose de-escalation has been effective in preventing tumor recurrences while also limiting acute and long-term toxicities. However, long-term risks, including the prevailing concern of secondary malignancy risk, between adjuvant radiation and chemotherapy play a role in recommendations. Ongoing work continues to be performed to reduce radiation field and dose in combination with chemotherapy while still maintaining excellent outcomes.
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Affiliation(s)
- Jay C Shiao
- Department of Radiation Oncology, University of Kansas Cancer Center, 4001 Rainbow Boulevard, Kansas City, KS 66160, USA.
| | - Xinglei Shen
- Department of Radiation Oncology, University of Kansas Cancer Center, 4001 Rainbow Boulevard, Kansas City, KS 66160, USA
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2
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Hotca A, Sindhu KK, Lehrer EJ, Hartsell WF, Vargas C, Tsai HK, Chang JH, Apisarnthanarax S, Nichols RC, Chhabra AM, Hasan S, Press RH, Lazarev S, Hajj C, Kabarriti R, Rule WG, Simone CB, Choi JI. Reirradiation With Proton Therapy for Recurrent Malignancies of the Esophagus and Gastroesophageal Junction: Results of the Proton Collaborative Group Multi-Institutional Prospective Registry Trial. Adv Radiat Oncol 2024; 9:101459. [PMID: 38596455 PMCID: PMC11002543 DOI: 10.1016/j.adro.2024.101459] [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: 07/12/2023] [Accepted: 01/21/2024] [Indexed: 04/11/2024] Open
Abstract
Purpose Treatment options for recurrent esophageal cancer (EC) previously treated with radiation therapy (RT) are limited. Reirradiation (reRT) with proton beam therapy (PBT) can offer lower toxicities by limiting doses to surrounding tissues. In this study, we present the first multi-institutional series reporting on toxicities and outcomes after reRT for locoregionally recurrent EC with PBT. Methods and Materials Analysis of the prospective, multicenter, Proton Collaborative Group registry of patients with recurrent EC who had previously received photon-based RT and underwent PBT reRT was performed. Patient/tumor characteristics, treatment details, outcomes, and toxicities were collected. Local control (LC), distant metastasis-free survival (DMFS), and overall survival (OS) were estimated using the Kaplan-Meier method. Event time was determined from reRT start. Results Between 2012 and 2020, 31 patients received reRT via uniform scanning/passive scattering (61.3%) or pencil beam scanning (38.7%) PBT at 7 institutions. Median prior RT, PBT reRT, and cumulative doses were 50.4 Gy (range, 37.5-110.4), 48.6 Gy (relative biological effectiveness) (25.2-72.1), and 99.9 Gy (79.1-182.5), respectively. Of these patients, 12.9% had 2 prior RT courses, and 67.7% received PBT with concurrent chemotherapy. Median follow-up was 7.2 months (0.9-64.7). Post-PBT, there were 16.7% locoregional only, 11.1% distant only, and 16.7% locoregional and distant recurrences. Six-month LC, DMFS, and OS were 80.5%, 83.4%, and 69.1%, respectively. One-year LC, DMFS, and OS were 67.1%, 83.4%, and 27%, respectively. Acute grade ≥3 toxicities occurred in 23% of patients, with 1 acute grade 5 toxicity secondary to esophageal hemorrhage, unclear if related to reRT or disease progression. No grade ≥3 late toxicities were reported. Conclusions In the largest report to date of PBT for reRT in patients with recurrent EC, we observed acceptable acute toxicities and encouraging rates of disease control. However, these findings are limited by the poor prognoses of these patients, who are at high risk of mortality. Further research is needed to better assess the long-term benefits and toxicities of PBT in this specific patient population.
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Affiliation(s)
| | - Kunal K. Sindhu
- Icahn School of Medicine at Mount Sinai, New York, New York
- New York Proton Center, New York, New York
| | - Eric J. Lehrer
- Icahn School of Medicine at Mount Sinai, New York, New York
| | | | | | | | | | - Smith Apisarnthanarax
- University of Washington, Fred Hutchinson Cancer Center Proton Therapy, Seattle, Washington
| | - Romaine C. Nichols
- University of Florida Health Proton Therapy Institute, Jacksonville, Florida
| | - Arpit M. Chhabra
- Icahn School of Medicine at Mount Sinai, New York, New York
- New York Proton Center, New York, New York
| | - Shaakir Hasan
- New York Proton Center, New York, New York
- Montefiore Medical Center, Bronx, New York
| | | | - Stanislav Lazarev
- Icahn School of Medicine at Mount Sinai, New York, New York
- New York Proton Center, New York, New York
| | - Carla Hajj
- New York Proton Center, New York, New York
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Rafi Kabarriti
- New York Proton Center, New York, New York
- Montefiore Medical Center, Bronx, New York
| | | | - Charles B. Simone
- New York Proton Center, New York, New York
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - J. Isabelle Choi
- New York Proton Center, New York, New York
- Memorial Sloan Kettering Cancer Center, New York, New York
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3
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Isabelle Choi J, Wojcieszynski A, Amos RA, Giap H, Apisarnthanarax S, Ashman JB, Anand A, Perles LA, Williamson T, Ramkumar S, Molitoris J, Simone CB, Chuong MD. PTCOG Gastrointestinal Subcommittee Lower Gastrointestinal Tract Malignancies Consensus Statement. Int J Part Ther 2024; 11:100019. [PMID: 38757077 PMCID: PMC11095104 DOI: 10.1016/j.ijpt.2024.100019] [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: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 05/18/2024] Open
Abstract
Purpose Radiotherapy delivery in the definitive management of lower gastrointestinal (LGI) tract malignancies is associated with substantial risk of acute and late gastrointestinal (GI), genitourinary, dermatologic, and hematologic toxicities. Advanced radiation therapy techniques such as proton beam therapy (PBT) offer optimal dosimetric sparing of critical organs at risk, achieving a more favorable therapeutic ratio compared with photon therapy. Materials and Methods The international Particle Therapy Cooperative Group GI Subcommittee conducted a systematic literature review, from which consensus recommendations were developed on the application of PBT for LGI malignancies. Results Eleven recommendations on clinical indications for which PBT should be considered are presented with supporting literature, and each recommendation was assessed for level of evidence and strength of recommendation. Detailed technical guidelines pertaining to simulation, treatment planning and delivery, and image guidance are also provided. Conclusion PBT may be of significant value in select patients with LGI malignancies. Additional clinical data are needed to further elucidate the potential benefits of PBT for patients with anal cancer and rectal cancer.
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Affiliation(s)
- J. Isabelle Choi
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
- New York Proton Center, New York, New York, USA
| | | | - Richard A. Amos
- Department of Medical Physics & Biomedical Engineering, University College London, London, UK
| | - Huan Giap
- Medical University of South Carolina, Charleston, South Carolina, USA
| | - Smith Apisarnthanarax
- Department of Radiation Oncology, University of Washington, Seattle, Washington, USA
| | | | - Aman Anand
- Department of Radiation Oncology, Mayo Clinic, Scottsdale, Arizona, USA
| | - Luis A. Perles
- Department of Radiation Physics, UT MD Anderson Cancer Center, Houston, Texas, USA
| | - Tyler Williamson
- Department of Radiation Physics, UT MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Jason Molitoris
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, Maryland, USA
| | - Charles B. Simone
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
- New York Proton Center, New York, New York, USA
| | - Michael D. Chuong
- Department of Radiation Oncology, Miami Cancer Institute, Miami, Florida, USA
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4
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Pursley J, Remillard K, Depauw N, Lee G, Grassberger C, Paganetti H, Efstathiou JA, Kamran SC. Radiation Therapy for Stage IIA/B Seminoma: Modeling Secondary Cancer Risk for Protons and VMAT versus 3D Photons. Cancers (Basel) 2024; 16:784. [PMID: 38398175 PMCID: PMC10886533 DOI: 10.3390/cancers16040784] [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: 01/14/2024] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Radiation therapy (RT) is an effective treatment for stage IIA and select stage IIB seminomas. However, given the long life expectancy of seminoma patients, there are concerns about the risk of secondary cancers from RT. This study assessed differences in secondary cancer risk for stage II seminoma patients following proton pencil-beam scanning (PBS) and photon VMAT, compared to 3D conformal photon RT. Ten seminoma patients, five with a IIA staging who received 30 GyRBE and five with a IIB staging who received 36 GyRBE, had three RT plans generated. Doses to organs at risk (OAR) were evaluated, and secondary cancer risks were calculated as the Excess Absolute Risk (EAR) and Lifetime Attributable Risk (LAR). PBS reduced the mean OAR dose by 60% on average compared to 3D, and reduced the EAR and LAR for all OAR, with the greatest reductions seen for the bowel, liver, and stomach. VMAT reduced high doses but increased the low-dose bath, leading to an increased EAR and LAR for some OAR. PBS provided superior dosimetric sparing of OAR compared to 3D and VMAT in stage II seminoma cases, with models demonstrating that this may reduce secondary cancer risk. Therefore, proton therapy shows the potential to reduce acute and late side effects of RT for this population.
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Affiliation(s)
- Jennifer Pursley
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Kyla Remillard
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Nicolas Depauw
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Grace Lee
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Clemens Grassberger
- Department of Radiation Oncology, University of Washington Medical Center, Seattle, WA 98195, USA
| | - Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Jason A. Efstathiou
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
| | - Sophia C. Kamran
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA (S.C.K.)
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Rønde HS, Kronborg C, Høyer M, Hansen J, Bak ME, Agergaard SN, Als AB, Agerbæk M, Lauritsen J, Meidahl Petersen P, Dysager L, Kallehauge JF. Dose comparison of robustly optimized intensity modulated proton therapy (IMPT) vs IMRT and VMAT photon plans for testicular seminoma. Acta Oncol 2023; 62:1222-1229. [PMID: 37683054 DOI: 10.1080/0284186x.2023.2254925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
BACKGROUND Patients with stage II seminoma have traditionally been treated with photons to the retroperitoneal and iliac space, which leads to a substantial dose bath to abdominal and pelvic organs at risk (OAR). As these patients are young and with excellent prognosis, reducing dose to OAR and thereby the risk of secondary cancer is of utmost importance. We compared IMPT to opposing IMRT fields and VMAT, assessing dose to OAR and both overall and organ-specific secondary cancer risk. MATERIAL AND METHODS A comparative treatment planning study was conducted on planning CT-scans from ten patients with stage II seminoma, treated with photons to a 'dog-leg' field with doses ranging from 20 to 25 Gy and a 10 Gy sequential boost to the metastatic lymph node(s). Photon plans were either 3-4 field IMRT (Eclipse) or 1-2 arc VMAT (Pinnacle). Proton plans used robust (5 mm; 3.5%) IMPT (Eclipse), multi field optimization with 3 posterior fields supplemented by 2 anterior fields at the level of the iliac vessels. Thirty plans were generated. Mean doses to OARs were compared for IMRT vs IMPT and VMAT vs IMPT. The risk of secondary cancer was calculated according to the model described by Schneider, using excess absolute risk (EAR, per 10,000 persons per year) for body outline, stomach, duodenum, pancreas, bowel, bladder and spinal cord. RESULTS Mean doses to all OARs were significantly lower with IMPT except similar kidney (IMRT) and spinal cord (VMAT) doses. The relative EAR for body outline was 0.59 for IMPT/IMRT (p < .05) and 0.33 for IMPT/VMAT (p < .05). Organ specific secondary cancer risk was also lower for IMPT except for pancreas and duodenum. CONCLUSION Proton therapy reduced radiation dose to OAR compared to both IMRT and VMAT plans, and potentially reduce the risk of secondary cancer both overall and for most OAR.
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Affiliation(s)
- Heidi S Rønde
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Camilla Kronborg
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Morten Høyer
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Jolanta Hansen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | | | - Mads Agerbæk
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Lars Dysager
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Jesper F Kallehauge
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
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6
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Maxwell R, Chang Y, Paul C, Vaughn DJ, Christodouleas JP. Cancer Control, Toxicity, and Secondary Malignancy Risks of Proton Radiation Therapy for Stage I-IIB Testicular Seminoma. Adv Radiat Oncol 2023; 8:101259. [PMID: 37408671 PMCID: PMC10318216 DOI: 10.1016/j.adro.2023.101259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 04/24/2023] [Indexed: 07/07/2023] Open
Abstract
Purpose This study's objective was to report cancer control and toxicity outcomes after proton radiation therapy (RT) in testicular seminoma and to compare secondary malignancy (SMN) risks with photon-based treatment alternatives. Methods and Materials Consecutive patients with stage I-IIB testicular seminoma treated with proton RT at a single institution were retrospectively analyzed. Kaplan-Meier estimates for disease-free and overall survival were computed. Toxicities were scored using Common Terminology Criteria for Adverse Events version 5.0. Photon comparison plans, including 3-dimensional conformal RT (3D-CRT) and intensity modulated RT (IMRT)/volumetric arc therapy (VMAT), were created for each patient. Dosimetric parameters and SMN risk predictions for different in-field organs-at-risk were compared between the techniques. Excess absolute SMN risks were estimated with organ equivalent dose modeling. Results Twenty-four patients were included (median age, 38.5 years). The majority of patients had stage II disease (IIA, 12 [50.0%]; IIB, 11 [45.8%]; IA, 1 [4.2%]). Seven (29.2%) and 17 (70.8%) patients had de novo and recurrent disease, respectively (de novo/recurrent: IA, 1/0; IIA, 4/8; IIB, 2/9). Most acute toxicities were mild (grade 1 [G1], 79.2%; G2, 12.5%) with G1 nausea being most common (70.8%). No serious events (G3-5) occurred. With a median follow-up time of 3 years (interquartile range, 2.1-3.6 years), 3-year disease-free and overall survival rates were 90.9% (95% confidence interval, 68.1%-97.6%) and 100% (95% confidence interval, 100%-100%), respectively. There were no documented late toxicities in the follow-up period, including worsening serial creatinine levels suggestive of early nephrotoxicity. Proton RT had significant reductions in mean organ-at-risk doses to the kidneys, stomach, colon, liver, bladder, and body compared with both 3D-CRT and IMRT/VMAT. Proton RT had significantly lower SMN risk predictions compared with 3D-CRT and IMRT/VMAT. Conclusions Cancer control and toxicity outcomes using proton RT in stage I-IIB testicular seminoma are consistent with existing photon-based RT literature. However, proton RT may be associated with significantly lower SMN risks.
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Affiliation(s)
| | | | | | - David J. Vaughn
- Department of Hematology/Oncology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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7
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Wood GE, Chamberlain F, Tran B, Conduit C, Liow E, Nicol DL, Shamash J, Alifrangis C, Rajan P. Treatment de-escalation for stage II seminoma. Nat Rev Urol 2023:10.1038/s41585-023-00727-0. [PMID: 36882564 DOI: 10.1038/s41585-023-00727-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2023] [Indexed: 03/09/2023]
Abstract
International Germ Cell Cancer Collaborative Group good-risk metastatic seminoma has cure rates of >95%. Within this risk group, patients with stage II disease exhibit the best oncological outcomes with the standard-of-care treatment strategies of radiotherapy or combination chemotherapy. However, these treatments can be associated with substantial early and late toxic effects. Therapy de-escalation aims to reduce treatment morbidity whilst preserving oncological outcomes. The evidence supporting such approaches is largely from non-randomized institutional data, and therefore this strategy is not recognized as standard of care. Current de-escalation approaches for stage II seminoma include single-agent chemotherapy, radiotherapy and surgery based on early data from clinical studies. Increased recognition of emerging data on treatment modification to reduce morbidity whilst maintaining cure rates and consideration of therapy de-escalation could improve patient survivorship outcomes.
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Affiliation(s)
- Georgina E Wood
- Department of Medical Oncology, University College London Hospitals NHS Foundation Trust, London, UK.,Department of Medical Oncology, Barts Health NHS Trust, London, UK
| | | | - Ben Tran
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Division of Personalized Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Ciara Conduit
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Division of Personalized Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Elizabeth Liow
- Division of Personalized Medicine, Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - David L Nicol
- Department of Urology, The Royal Marsden Hospital NHS Foundation Trust, London, UK
| | - Jonathan Shamash
- Department of Medical Oncology, Barts Health NHS Trust, London, UK
| | - Constantine Alifrangis
- Department of Medical Oncology, University College London Hospitals NHS Foundation Trust, London, UK. .,National Institute for Health Research University College London Hospitals Biomedical Research Centre, University College London Hospitals NHS Foundation Trust, London, UK.
| | - Prabhakar Rajan
- Centre for Cancer Cell and Molecular Biology, Barts Cancer Institute, Queen Mary University of London, London, UK. .,Division of Surgery and Interventional Science, University College London, London, UK. .,Department of Urology, Barts Health NHS Trust, London, UK. .,Department of Urology, University College London Hospitals NHS Foundation Trust, London, UK.
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8
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Preoperative short-course radiation therapy with PROtons compared to photons in high-risk RECTal cancer (PRORECT): Initial dosimetric experience. Clin Transl Radiat Oncol 2022; 39:100562. [PMID: 36582423 PMCID: PMC9792362 DOI: 10.1016/j.ctro.2022.100562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Background and purpose Neoadjuvant short-course radiotherapy (SCRT) followed by full-dose systemic chemotherapy is an established treatment modality in locally advanced rectal cancer (LARC). Until recently, SCRT has been exclusively delivered with photons. Proton beam therapy (PBT) may minimize acute toxicity, which in turn likely impacts favorably on the tolerability to subsequent chemotherapy. The aim of this study is a dosimetric comparison between SCRT with photons and protons in the randomized phase II trial PRORECT (NCT04525989). Materials and methods From June 2021 to June 2022, twenty consecutive patients with LARC have been treated according to study protocol. For each patient, both a VMAT and a PBT treatment plans have been generated and compared pairwise. Results Dose-volume histogram (DVH) analysis revealed that SCRT with protons significantly reduced radiation dose to pelvic organs at risk including bladder, bones, and bowel in comparison to SCRT with photons. Photon and proton treatment plans had equivalent conformity and homogeneity indexes. Conclusion Preoperative SCRT with protons offers a significant reduction of radiation dose to normal tissues compared with current photon-based radiotherapy technique. Demonstrated dosimetric advantages may translate into measurable clinical benefits in patients with LARC. Clinical implications of the dosimetric superiority of SCRT with protons will be presented in the coming reports from the PRORECT trial.
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9
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Taunk N. The role of proton therapy in gynecological radiation oncology. Int J Gynecol Cancer 2022; 32:414-420. [DOI: 10.1136/ijgc-2021-002459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/06/2022] [Indexed: 11/04/2022] Open
Abstract
Proton beam therapy is an external beam radiotherapy modality that offers potentially similar efficacy and reduced toxicity compared with photon radiotherapy due to little to no exit dose of radiation beyond the intended target. Improvements in radiotherapy from two-dimensional, to three-dimensional, to intensity-modulated radiation therapy have offered comparable to improved efficacy of radiation therapy with progressive reductions in toxicity. Proton beam therapy may offer further improvements, with multiple dosimetric studies demonstrating potential reductions in exposure of normal tissue to radiation, particularly bowel and bone marrow. Proton beam therapy offers avenues for dose escalation or re-irradiation, which were previously not feasible with photon radiotherapy. Although early clinical data generally demonstrate safety, feasibility, and efficacy in a few series, prospective clinical trials are limited and needed to better define who might benefit from proton therapy. In this review, we discuss the history, dosimetry, available clinical data, and technical needs to deliver high-quality proton therapy.
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10
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Trybula SJ, Youngblood MW, Kemeny HR, Clark JR, Karras CL, Hartsell WF, Tomita T. Radiation Induced Cavernomas in the Treatment of Pediatric Medulloblastoma: Comparative Study Between Proton and Photon Radiation Therapy. Front Oncol 2021; 11:760691. [PMID: 34707999 PMCID: PMC8542782 DOI: 10.3389/fonc.2021.760691] [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: 08/18/2021] [Accepted: 09/24/2021] [Indexed: 11/21/2022] Open
Abstract
Radiation induced cavernomas among children with medulloblastoma are common following external beam radiation (XRT) treatment with either photon or proton beams. However, with the increased utilization of proton beam therapy over the last decade we sought to determine if there was any difference in the development or natural history of these cavernous malformations (CM) or CM-like lesions. We performed a retrospective analysis of 79 patients from 2003 to 2019 who had undergone resection of medulloblastoma and subsequent XRT (30 photon or 49 proton beam therapy). The average age of patients at radiation treatment was 8.7 years old. Average follow up for patients who received photon beam therapy was 105 months compared to 56.8 months for proton beam therapy. A total of 68 patients (86.1%) developed post-radiation CMs, including 26 photon and 42 proton patients (86.7% and 85.7% respectively). The time to cavernoma development was significantly different, with a mean of 40.2 months for photon patients and 18.2 months for proton patients (p = 1.98 x 10-4). Three patients, one who received photon and two who received proton beam radiation, required surgical resection of a cavernoma. Although CM or CM-like lesions are detected significantly earlier in patients after receiving proton beam therapy, there appears to be no significant difference between the two radiation therapy modalities in the development of significant CM requiring surgical resection or intervention other than continued follow up and surveillance.
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Affiliation(s)
- S Joy Trybula
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Mark W Youngblood
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Hanna R Kemeny
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Jeffrey R Clark
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Constantine L Karras
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - William F Hartsell
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States.,Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Tadanori Tomita
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
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11
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Chhabra AM, Choi JI, Hasan S, Press RH, Kabarriti R, Lazarev S, Wolden S, Simone CB. Insurer's Black Box: Inexplicable Barriers to Proton Therapy Access for Young Adults. Int J Radiat Oncol Biol Phys 2021; 110:1538-1539. [PMID: 34273325 DOI: 10.1016/j.ijrobp.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Arpit M Chhabra
- Department of Radiation Oncology, New York Proton Center, New York, New York
| | - J Isabelle Choi
- Department of Radiation Oncology, New York Proton Center, New York, New York
| | - Shaakir Hasan
- Department of Radiation Oncology, New York Proton Center, New York, New York
| | - Robert H Press
- Department of Radiation Oncology, New York Proton Center, New York, New York
| | - Rafi Kabarriti
- Department of Radiation Oncology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, New York
| | - Stanislav Lazarev
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Suzanne Wolden
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Charles B Simone
- Department of Radiation Oncology, New York Proton Center, New York, New York
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12
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Pasalic D, Prajapati S, Ludmir EB, Tang C, Choi S, Kudchadker R, Frank SJ. Outcomes and Toxicities of Proton and Photon Radiation Therapy for Testicular Seminoma. Int J Part Ther 2020; 7:11-20. [PMID: 33274253 PMCID: PMC7707326 DOI: 10.14338/ijpt-20-00018.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/30/2020] [Indexed: 12/24/2022] Open
Abstract
Purpose To determine the clinical outcomes and toxicities of proton beam therapy (PBT) versus 3D-conformal photon radiation therapy (XRT) in patients with testicular seminoma. Materials and Methods This observational study evaluated consecutive patients with testicular seminoma who were treated with inguinal orchiectomy and radiation therapy at a single, tertiary, high-volume center in 2008-19. Acute toxicity was scored with the Common Terminology Criteria for Adverse Events V 4.0. Organs at risk were contoured retrospectively by 2 investigators. Recurrences and secondary malignancies were based on routine follow-up imaging, either computed tomography or magnetic resonance imaging. Results Fifty-five patients were treated with radiation therapy, 11 in the PBT-arm and 44 in the XRT-arm, with a median follow-up interval of 61 months (interquartile range [IQR]: 32-79 months). Acute treatment-related diarrhea, grade 1 to 2, was more common among XRT-treated patients (0% vs 29.5%, P = .039), and dermatitis, grade 1, was more likely among PBT-treated patients (27.3% vs 2.3%, P = .004). Dosimetrically, PBT-treated patients, relative to XRT-treated patients, had lower dose to organs at risk including the kidney, bladder, femoral head, spinal cord, bowel, pancreas, and stomach. The 5-year overall survival rate was 100% and disease-free survival rate was 96.4% for all patients. Two patients, all in the XRT-arm, had disease recurrence: 1 in the pelvis and 1 in the lung. Three patients, all in the XRT-arm, were diagnosed with a secondary malignancy: 1 in-field pancreaticoblastoma, 1 in-field colon adenocarcinoma, and a stage IV T-cell lymphoma. Conclusion Proton beam therapy for testicular seminoma resulted in excellent clinical outcomes and was associated with lower rates of acute diarrhea but higher rates of acute dermatitis. Proton beam therapy resulted in no in-field secondary malignancies and a more favorable dosimetric profile for organs at risk relative to XRT. Reduced dose to organs at risk, such as the kidneys, may result in long-term improvement in function.
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Affiliation(s)
- Dario Pasalic
- Department of Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Surendra Prajapati
- Department of Radiation Physics, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ethan B Ludmir
- Department of Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chad Tang
- Department of Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Seungtaek Choi
- Department of Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rajat Kudchadker
- Department of Radiation Physics, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Steven J Frank
- Department of Radiation Oncology, the University of Texas MD Anderson Cancer Center, Houston, TX, USA
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13
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Simone CB, Plastaras JP, Jabbour SK, Lee A, Lee NY, Choi JI, Frank SJ, Chang JY, Bradley J. Proton Reirradiation: Expert Recommendations for Reducing Toxicities and Offering New Chances of Cure in Patients With Challenging Recurrence Malignancies. Semin Radiat Oncol 2020; 30:253-261. [PMID: 32503791 PMCID: PMC10870390 DOI: 10.1016/j.semradonc.2020.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Local and regional recurrences are common following an initial course of radiotherapy, yet management of these recurrences remains a challenge. Reirradiation may be an optimal treatment approach for providing durable tumor control and even offering select patients with locoregional recurrences or new primary tumors a chance of cure, but photon reirradiation can be associated with considerable risks of high grade acute and late toxicities. The high conformality and lack of exit dose with proton therapy offer significant advantages for reirradiation. By decreasing dose to adjacent normal tissues, proton therapy can more safely deliver definitive instead of palliative doses of reirradiation, more safely dose escalate reirradiation treatment, and more safely allow for concurrent systemic therapy in the reirradiation setting. In this case-based analysis, renowned experts in the fields of proton therapy and of reirradiation present cases for which they recently employed proton reirradiation. This manuscript focuses on case studies in patients with lung cancer, head and neck malignancies, and pelvic malignancies. Considerations for when to deliver proton therapy in the reirradiation setting and the pros and cons of proton therapy are discussed, and the existing literature supporting the use of proton reirradiation for these disease sites is assessed.
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Affiliation(s)
- Charles B Simone
- Department of Radiation Oncology, New York Proton Center and Memorial Sloan Kettering Cancer Center, New York, NY.
| | - John P Plastaras
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA
| | - Salma K Jabbour
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ
| | - Anna Lee
- Department of Radiation Oncology, New York Proton Center and Memorial Sloan Kettering Cancer Center, New York, NY
| | - Nancy Y Lee
- Department of Radiation Oncology, New York Proton Center and Memorial Sloan Kettering Cancer Center, New York, NY
| | - J Isabelle Choi
- Department of Radiation Oncology, New York Proton Center and Memorial Sloan Kettering Cancer Center, New York, NY
| | - Steven J Frank
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Joe Y Chang
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jeffrey Bradley
- Department of Radiation Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA
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14
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Abstract
Gastrointestinal cancers are bordered by radiosensitive visceral organs, resulting in a narrow therapeutic window. The search for more efficacious and tolerable therapies raises the possibility that proton beam therapy's (PBT) physical and dosimetric differences from conventional therapy may be better suited to treat both primary and recurrent disease, which carries its own unique challenges. Currently, the maximal efficacy of radiation plans for primary and recurrent anorectal cancer is constrained by delivery techniques and modalities which must consider feasibility challenges and toxicity secondary to exposure of organs at risk (OARs). Studies using volumetric modulated arc therapy (VMAT) and intensity modulated radiation therapy (IMRT) demonstrate that more precise dose delivery to target volumes improves local control rates and reduces complications. By reducing the low-to-moderate radiation dose-bath to bone marrow, small and large bowel, and skin, PBT may offer an improved side-effect profile. The potential to reduce toxicity, increase patient compliance, minimize treatment breaks, and enable dose escalation or hypofractionation is appealing. In cases where prognosis is favorable, PBT may mitigate long-term morbidity such as secondary malignancies, femoral fractures, and small bowel obstruction.
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Affiliation(s)
| | - Jennifer Y Wo
- Harvard Medical School, Boston, MA, USA.,Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
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15
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Honecker F, Aparicio J, Berney D, Beyer J, Bokemeyer C, Cathomas R, Clarke N, Cohn-Cedermark G, Daugaard G, Dieckmann KP, Fizazi K, Fosså S, Germa-Lluch JR, Giannatempo P, Gietema JA, Gillessen S, Haugnes HS, Heidenreich A, Hemminki K, Huddart R, Jewett MAS, Joly F, Lauritsen J, Lorch A, Necchi A, Nicolai N, Oing C, Oldenburg J, Ondruš D, Papachristofilou A, Powles T, Sohaib A, Ståhl O, Tandstad T, Toner G, Horwich A. ESMO Consensus Conference on testicular germ cell cancer: diagnosis, treatment and follow-up. Ann Oncol 2019; 29:1658-1686. [PMID: 30113631 DOI: 10.1093/annonc/mdy217] [Citation(s) in RCA: 195] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The European Society for Medical Oncology (ESMO) consensus conference on testicular cancer was held on 3-5 November 2016 in Paris, France. The conference included a multidisciplinary panel of 36 leading experts in the diagnosis and treatment of testicular cancer (34 panel members attended the conference; an additional two panel members [CB and K-PD] participated in all preparatory work and subsequent manuscript development). The aim of the conference was to develop detailed recommendations on topics relating to testicular cancer that are not covered in detail in the current ESMO Clinical Practice Guidelines (CPGs) and where the available level of evidence is insufficient. The main topics identified for discussion related to: (1) diagnostic work-up and patient assessment; (2) stage I disease; (3) stage II-III disease; (4) post-chemotherapy surgery, salvage chemotherapy, salvage and desperation surgery and special topics; and (5) survivorship and follow-up schemes. The experts addressed questions relating to one of the five topics within five working groups. Relevant scientific literature was reviewed in advance. Recommendations were developed by the working groups and then presented to the entire panel. A consensus vote was obtained following whole-panel discussions, and the consensus recommendations were then further developed in post-meeting discussions in written form. This manuscript presents the results of the expert panel discussions, including the consensus recommendations and a summary of evidence supporting each recommendation. All participants approved the final manuscript.
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Affiliation(s)
- F Honecker
- Tumor and Breast Center ZeTuP, St. Gallen, Switzerland; Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald Tumorzentrum, University Medical Center, Hamburg, Germany.
| | - J Aparicio
- Department of Medical Oncology, Hospital Universitari i Politècnic la Fe, Valencia, Spain
| | - D Berney
- Department of Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - J Beyer
- Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - C Bokemeyer
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald Tumorzentrum, University Medical Center, Hamburg, Germany
| | - R Cathomas
- Department of Oncology and Hematology, Kantonsspital Graubünden, Chur, Switzerland
| | - N Clarke
- Department of Surgery, The Christie NHS Foundation Trust, Manchester, UK
| | - G Cohn-Cedermark
- Department of Oncology-Pathology, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - G Daugaard
- Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - K-P Dieckmann
- Department of Urology, Asklepios Klinik Altona, Hamburg, Germany
| | - K Fizazi
- Department of Cancer Medicine, Gustave Roussy, University of Paris Sud, Villejuif, France
| | - S Fosså
- Department of Oncology, Oslo University Hospital Radiumhospitalet, Oslo, Norway
| | - J R Germa-Lluch
- Department of Medical Oncology, Catalan Institute of Oncology (ICO), Barcelona University, Barcelona, Spain
| | - P Giannatempo
- Department of Medical Oncology, Fondazione IRCCS Istituto dei Tumori, Milan, Italy
| | - J A Gietema
- Department of Medical Oncology, University Medical Center Groningen, Groningen, The Netherlands
| | - S Gillessen
- Department of Oncology and Hematology, Kantonsspital St. Gallen, St. Gallen; University of Bern, Bern, Switzerland
| | - H S Haugnes
- Department of Oncology, University Hospital of North Norway, Tromsø, Norway; Institute of Clinical Medicine, UIT - The Arctic University, Tromsø, Norway
| | - A Heidenreich
- Department of Urology, Uro-Oncology, Robot-assisted and Specialised Urologic Surgery, University of Cologne, Cologne, Germany
| | - K Hemminki
- Department of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - R Huddart
- Department of Radiotherapy and Imaging, The Institute of Cancer Research, Royal Marsden Hospital, Sutton, UK
| | - M A S Jewett
- Departments of Surgery (Urology) and Surgical Oncology, Princess Margaret Cancer Center, University Health Network, University of Toronto, Toronto, Canada
| | - F Joly
- Department of Urology-Gynaecology, Centre Francois Baclesse, Caen, France
| | - J Lauritsen
- Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - A Lorch
- Department of Urology, Genitourinary Medical Oncology, Heinrich-Heine University Hospital Düsseldorf, Düsseldorf, Germany
| | - A Necchi
- Department of Medical Oncology, Fondazione IRCCS Istituto dei Tumori, Milan, Italy
| | - N Nicolai
- Department of Surgery, Urology and Testis Surgery Unit, Fondazione IRCCS Istituto dei Tumori, Milan, Italy
| | - C Oing
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald Tumorzentrum, University Medical Center, Hamburg, Germany
| | - J Oldenburg
- Department of Oncology, Akershus University Hospital, Lørenskog, Norway
| | - D Ondruš
- 1st Department of Oncology, St. Elisabeth Cancer Institute, Comenius University Faculty of Medicine, Bratislava, Slovak Republic
| | - A Papachristofilou
- Department of Radiation Oncology, University Hospital Basel, Basel, Switzerland
| | - T Powles
- Department of Medical Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - A Sohaib
- Department of Radiology, Royal Marsden Hospital, Sutton, UK
| | - O Ståhl
- Department of Oncology, Skane University Hospital, Lund University, Lund, Sweden
| | - T Tandstad
- The Cancer Clinic, St. Olavs Hospital, Trondheim, Norway
| | - G Toner
- Department of Medical Oncology, Peter MacCallum Cancer Centre and University of Melbourne, Melbourne, Australia
| | - A Horwich
- The Institute of Cancer Research, Royal Marsden Hospital, Sutton, UK
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16
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Choo R, Kazemba B, Choo CS, Lester SC, Whitaker T. Proton Therapy for Stage IIA-B Seminoma: A New Standard of Care for Treating Retroperitoneal Nodes. Int J Part Ther 2019; 5:50-57. [PMID: 31773034 PMCID: PMC6874188 DOI: 10.14338/ijpt-18-00001.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 07/18/2018] [Indexed: 11/26/2022] Open
Abstract
Currently there has been no published report describing the use of proton beam therapy for stage II testicular seminoma. A 31-year-old man presenting with a right testicular mass and a 2.7-cm aortocaval lymph node received a diagnosis of stage IIB testicular seminoma. He was treated with scanning proton beam therapy, as a means of improving the therapeutic ratio of radiation therapy over conventionally used x-ray radiation therapy. The patient achieved a complete response and remained free of relapse at 15 months post proton beam therapy. The advantageous dose deposition characteristics of proton beam, allowing much lower radiation doses to normal tissues, should be exploited when radiation therapy is applied for stage II testicular seminoma or for an isolated retroperitoneal lymph node relapse of stage I disease initially managed with surveillance.
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Affiliation(s)
- Richard Choo
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
| | - Bret Kazemba
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
| | - Christopher S Choo
- Department of Internal Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Scott C Lester
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
| | - Thomas Whitaker
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
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17
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Matsumoto S, Yonai S, Bolch WE. Monte Carlo study of out-of-field exposure in carbon-ion radiotherapy: Organ doses in pediatric brain tumor treatment. Med Phys 2019; 46:5824-5832. [PMID: 31603561 DOI: 10.1002/mp.13864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/18/2019] [Accepted: 10/08/2019] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To estimate out-of-field doses during carbon-ion radiotherapy (CIRT) for pediatric cerebellar ependymoma. METHODS Given that the out-of-field dose of CIRT depends on beam parameters, we set them for treatment of typical pediatric cerebellar ependymoma based on a previous study. The out-of-field dose during CIRT for pediatric cerebellar ependymoma was then estimated using the Particle and Heavy-Ion Transport code System with Monte Carlo simulations and a computational phantom developed at the University of Florida. From the simulation results, out-of-field doses at dose equivalents of passive beam and active scanning beam CIRT were calculated and compared to the secondary neutron-equivalent dose of passive beam CIRT and proton therapy. RESULTS The out-of-field dose equivalent decreases from 1.45 mSv/Gy (relative biological effectiveness - RBE) at the thyroid to 0.06 mSv/Gy (RBE) at the bladder, verifying decay as the distance from the treatment target increases. The out-of-field neutron-equivalent dose in organs per prescribed dose for passive beam CIRT is lower than that for passive beam proton therapy. Moreover, the out-of-field organ dose equivalent per prescribed dose for the active scanning beam CIRT is lower than that for the passive beam CIRT. CONCLUSIONS Active scanning beam CIRT is promising for pediatric cerebellar ependymoma regarding out-of-field exposure, outperforming the comparison radiotherapy modalities.
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Affiliation(s)
- Shinnosuke Matsumoto
- Department of Accelerator and Medical Physics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba City, Chiba, 263-8555, Japan
| | - Shunsuke Yonai
- Department of Accelerator and Medical Physics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba City, Chiba, 263-8555, Japan
| | - Wesley E Bolch
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
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18
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Gomez DR, Rimner A, Simone CB, Cho BCJ, de Perrot M, Adjei AA, Bueno R, Gill RR, Harpole DH, Hesdorffer M, Hirsch FR, Jackson AA, Pass HI, Rice DC, Rusch VW, Tsao AS, Yorke E, Rosenzweig K. The Use of Radiation Therapy for the Treatment of Malignant Pleural Mesothelioma: Expert Opinion from the National Cancer Institute Thoracic Malignancy Steering Committee, International Association for the Study of Lung Cancer, and Mesothelioma Applied Research Foundation. J Thorac Oncol 2019; 14:1172-1183. [PMID: 31125736 DOI: 10.1016/j.jtho.2019.03.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 03/28/2019] [Accepted: 03/28/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Detailed guidelines regarding the use of radiation therapy for malignant pleural mesothelioma (MPM) are currently lacking because of the rarity of the disease, the wide spectrum of clinical presentations, and the paucity of high-level data on individual treatment approaches. METHODS In March 2017, a multidisciplinary meeting of mesothelioma experts was cosponsored by the U.S. National Cancer Institute, International Association for the Study of Lung Cancer Research, and Mesothelioma Applied Research Foundation. Among the outcomes of this conference was the foundation of detailed, multidisciplinary consensus guidelines. RESULTS Here we present consensus recommendations on the use of radiation therapy for MPM in three discrete scenarios: (1) hemithoracic radiation therapy to be used before or after extrapleural pneumonectomy; (2) hemithoracic radiation to be used as an adjuvant to lung-sparing procedures (i.e., without pneumonectomy); and (3) palliative radiation therapy for focal symptoms caused by the disease. We discuss appropriate simulation techniques, treatment volumes, dose fractionation regimens, and normal tissue constraints. We also assess the role of particle beam therapy, specifically, proton beam therapy, for MPM. CONCLUSION The recommendations provided in this consensus statement should serve as important guidelines for developing future clinical trials of treatment approaches for MPM.
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Affiliation(s)
- Daniel R Gomez
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York.
| | - Andreas Rimner
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Charles B Simone
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland
| | - B C John Cho
- Cancer Clinical Research Unit, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Marc de Perrot
- Cancer Clinical Research Unit, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Alex A Adjei
- Department of Oncology, Mayo Clinic, Rochester, Minnesota
| | - Raphael Bueno
- Division of Thoracic Surgery, Brigham and Women's Hospital, Boston, Massachusetts
| | - Ritu R Gill
- Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - David H Harpole
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | | | - Fred R Hirsch
- Department of Medicine, University of Colorado, Denver, Colorado; Department of Pathology, University of Colorado, Denver, Colorado
| | | | - Harvey I Pass
- Department of Cardiothoracic Surgery, New York University School of Medicine, New York, New York
| | - David C Rice
- Department of Thoracic and Cardiovascular Surgery, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Valerie W Rusch
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Anne S Tsao
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Ellen Yorke
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Kenneth Rosenzweig
- Department of Radiation Oncology, Mount Sinai School of Medicine, New York, New York
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19
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Berghen C, Albersen M, Blanchard P, Bossi A, Briganti A, Cozzarini C, Decaestecker K, Fonteyne V, Haustermans K, Joniau S, Lim Joon D, Khoo V, Nguyen PL, Ost P, Villeirs G, Vulsteke C, Zietman A, De Meerleer G. Readressing the rationale of irradiation in stage I seminoma guidelines: a critical essay. BJU Int 2019; 124:35-39. [PMID: 30680874 DOI: 10.1111/bju.14686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Charlien Berghen
- Department of Radiation Oncology, Leuven University Hospital, Leuven, Belgium
| | - Maarten Albersen
- Department of Urology, Leuven University Hospital, Leuven, Belgium
| | - Pierre Blanchard
- Department of Radiation Oncology, Gustave Roussy Cancer Campus, Villejuif, France
| | - Alberto Bossi
- Department of Radiation Oncology, Gustave Roussy Cancer Campus, Villejuif, France
| | | | - Cesare Cozzarini
- Department of Radiation Oncology, San Raffaele Hospital, Milan, Italy
| | | | - Valérie Fonteyne
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - Karin Haustermans
- Department of Radiation Oncology, Leuven University Hospital, Leuven, Belgium
| | - Steven Joniau
- Department of Urology, Leuven University Hospital, Leuven, Belgium
| | - Daryl Lim Joon
- Olivia Newton John Cancer Centre, Melbourne, Vic., Australia
| | | | - Paul L Nguyen
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Bringham and Women's Hospital, Boston, MA, USA
| | - Piet Ost
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - Geert Villeirs
- Department of Radiology, Ghent University Hospital, Ghent, Belgium
| | - Christof Vulsteke
- Department of Oncology, Ghent Maria Middelares Hospital, Ghent, Belgium.,Department of Molecular Imaging, Pathology, Radiotherapy and Oncology, (MIPRO) Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
| | - Anthony Zietman
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Gert De Meerleer
- Department of Radiation Oncology, Leuven University Hospital, Leuven, Belgium
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20
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Ryckman JM, Ganesan V, Kusi Appiah A, Zhang C, Verma V. National practice patterns of proton versus photon therapy in the treatment of adult patients with primary brain tumors in the United States. Acta Oncol 2019; 58:66-73. [PMID: 30280620 DOI: 10.1080/0284186x.2018.1512755] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVES To examine patterns of care associated with the administration of proton versus photon therapy for adult patients with primary brain tumors in a large national cohort from the United States. METHODS The National Cancer Database (NCDB) was queried for newly diagnosed primary brain tumors (2004-2014) in adult patients aged 18 and older receiving proton or photon radiotherapy. Clinical features, patient demographics and treatment parameters were extracted. Differences between groups were assessed using multivariable logistic regression analysis. RESULTS In total, 73,073 patients were analyzed (n = 72,635 [99.4%] photon therapy, n = 438 [0.6%] proton therapy). On multivariable analysis of photon versus proton therapy, several factors predicted for receipt of proton therapy, including younger age (p = .041), highest income quartile (p = .007), treatment at academic institutions (p < .001), in regional facilities outside the Midwest/South (p < .001), diagnosis in more recent years (p = .003), fewer comorbidities (p < .001) and non-glioblastoma histology (p < .001). CONCLUSIONS There are several significant socioeconomic variables that influence receipt of proton therapy for primary brain tumors. Although not implying causation, the socioeconomic findings discovered herein should be taken into account when delivering cancer care to all patients.
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Affiliation(s)
- Jeffrey M. Ryckman
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vaishnavi Ganesan
- College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Adams Kusi Appiah
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, USA
| | - Chi Zhang
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vivek Verma
- Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA, USA
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21
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Hu X, Lian W, Zhang X, Yang X, Jiang J, Li M. Efficacy of negative pressure wound therapy using vacuum-assisted closure combined with photon therapy for management of diabetic foot ulcers. Ther Clin Risk Manag 2018; 14:2113-2118. [PMID: 30498354 PMCID: PMC6207409 DOI: 10.2147/tcrm.s164161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Diabetes mellitus, one of the most prevalent chronic metabolic diseases, causes many complications. Among the complications, one of the most common chronic complications is diabetic foot ulcers (DFUs). OBJECTIVE This study was conducted to investigate the efficacy of negative pressure wound therapy using vacuum-assisted closure (VAC) combined with photon therapy for the management of DFUs. PATIENTS AND METHODS The study included a total of 69 patients with DFUs during the period from January 2014 to December 2015. All patients were diagnosed with DFUs with Wagner's stage 2 or 3 and were divided into two groups - the VAC group in which patients received only VAC and the combined group in which patients received both VAC and photon therapy. Data on duration of the treatment, pre- and postoperative wound surface areas, dressing changing times, pain conditions assessed using visual analog scale scores, recurrence rate and amputation rate were collected. RESULTS Among all patients, 35 patients were divided into the VAC group and 34 patients into the combined group. Areas of foot ulcers for all patients ranged from 5 to 100 cm2. The treatment duration, dressing changing times and the peak value of visual analog scale scores were all significantly lower in the combined group compared with the VAC group (P < 0.05). However, the reduced area for wound surface showed no significant difference between the two groups. Both recurrence and amputation rates showed no significant difference between the two groups of patients. CONCLUSION Both VAC and VAC combined with photon therapy were effective and safe in the treatment of DFUs, while the combined therapy might have accelerated wound healing, but did not influence the long-term efficacy.
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Affiliation(s)
- Xiaoxiao Hu
- Department of interventional Vascular Surgery, The Tenth People's Hospital affiliated to Tongji University, Tongji University School of Medicine, shanghai, 200072, China,
| | - Weishuai Lian
- Department of interventional Vascular Surgery, The Tenth People's Hospital affiliated to Tongji University, Tongji University School of Medicine, shanghai, 200072, China,
| | - Xiaojun Zhang
- Department of interventional Catheter, The Tenth People's Hospital affiliated to Tongji University, Shanghai, 200072, China
| | - Xue Yang
- Department of Anesthesiology, eastern hospital affiliated to Tongji University, Shanghai, 200120, China
| | - Jinxia Jiang
- Department of Emergency, The Tenth People's Hospital affiliated to Tongji University, Shanghai, 200072, China,
| | - Maoquan Li
- Department of interventional Vascular Surgery, The Tenth People's Hospital affiliated to Tongji University, Tongji University School of Medicine, shanghai, 200072, China,
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Verma V, Lin L, Simone CB. Proton Beam Therapy for Bronchogenic Adenoid Cystic Carcinoma: Dosimetry, Toxicities, and Outcomes. Int J Part Ther 2018; 4:1-9. [PMID: 31773012 DOI: 10.14338/ijpt-17-00014.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 04/23/2018] [Indexed: 12/25/2022] Open
Abstract
Purpose Bronchogenicadenoid cystic carcinoma (ACC) is a rare malignancy particularly challenging to irradiate, largely owing to anatomic location and associated toxicities. Proton beam therapy (PBT) can reduce doses to nearby organs at risk, but only one case report has been published detailing PBT for this neoplasm. Patients and Methods This study was an institutional review board-approved retrospective chart review of all patients at one institution with bronchogenic ACC treated with PBT. Toxicities were assessed per Common Toxicity Criteria for Adverse Events, version 4.0. Results Five patients, median age 67 years (range = 40-97 years), were all symptomatic before PBT. Two patients were debulked before PBT, which was delivered at a median 66.6 Gy (RBE) (range, 57.5-80 Gy (RBE)). Two patients received concurrent platinum-based chemotherapy. Symptoms improved in all patients. Acute toxicities included the following: grade 1 fatigue (n = 3), grade 1 dermatitis (n = 2), grade 1 esophagitis (n = 1), grade 2 fatigue (n = 1), grade 2 dermatitis (n = 1), grade 2 esophagitis (n = 2). There was one case of late radiation fibrosis causing bronchial stenosis and requiring a stent, and another of late grade 1 dysphagia. All grade 2 toxicities occurred in patients receiving concurrent chemoradiotherapy. At median follow-up of 10 months (range = 5-47 months), no patient experienced tumor recurrence and none had symptoms impairing daily functioning or quality of life. Although statistically nonsignificant owing to low sample sizes, dosimetric data revealed that PBT numerically reduced doses, most notably to the heart and to low-dose volumes of the lung. Conclusions This is the largest series to date evaluating PBT for bronchogenic ACC. PBT is associated with low rates of acute and late toxicities and excellent early local control.
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Affiliation(s)
- Vivek Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Liyong Lin
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Charles B Simone
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
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Systematic assessment of clinical outcomes and toxicities of proton radiotherapy for reirradiation. Radiother Oncol 2017; 125:21-30. [DOI: 10.1016/j.radonc.2017.08.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/06/2017] [Accepted: 08/06/2017] [Indexed: 12/25/2022]
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Maemura K, Mataki Y, Kurahara H, Kawasaki Y, Iino S, Sakoda M, Ueno S, Arimura T, Higashi R, Yoshiura T, Shinchi H, Natsugoe S. Comparison of proton beam radiotherapy and hyper-fractionated accelerated chemoradiotherapy for locally advanced pancreatic cancer. Pancreatology 2017; 17:833-838. [PMID: 28778480 DOI: 10.1016/j.pan.2017.07.191] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/16/2017] [Accepted: 07/25/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES We compared the clinical outcomes of proton beam radiotherapy (PBRT) and those of conventional chemoradiotherapy via hyper-fractionated acceleration radiotherapy (HART) after induction chemotherapy in patients with locally advanced pancreatic cancer (LAPC). METHODS Twenty-five consecutive patients with LAPC received induction chemotherapy comprising gemcitabine and S-1 before radiotherapy. Of these, 15 and 10 were enrolled in the HART and PBRT groups, respectively. RESULTS Moderate hematological toxicities were observed only in the HART group, whereas two patients in the PBRT group developed duodenal ulcers. All patients underwent scheduled radiotherapy, with overall disease control rates of 93% and 80% in the HART and PBRT groups, respectively. Local progression was observed in 60% and 40% of patients in the HART and PBRT groups, respectively. However, there was no statistical significance between the two groups regarding the median time to progression (15.4 months in both) and the median overall survival (23.4 v.s. 22.3 months). CONCLUSIONS PBRT was feasible and tolerable, and scheduled protocols could be completed with careful attention to gastrointestinal ulcers. Despite the lower incidence of local recurrence, PBRT did not yield obvious progression control and survival benefits relative to conventional chemoradiotherapy.
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Affiliation(s)
- Kosei Maemura
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan.
| | - Yuko Mataki
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
| | - Hiroshi Kurahara
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
| | - Yota Kawasaki
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
| | - Satoshi Iino
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
| | - Masahiko Sakoda
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
| | - Shinichi Ueno
- Clinical Oncology, Kagoshima University, Kagoshima, Japan
| | - Takeshi Arimura
- Medipolis Proton Therapy and Research Center, Ibusuki, Japan
| | - Ryutaro Higashi
- Department of Radiology, Kagoshima University, Kagoshima, Japan
| | | | - Hiroyuki Shinchi
- Graduate School of Health Sciences, Kagoshima University, Kagoshima, Japan
| | - Shoji Natsugoe
- Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan
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Vogel J, Lin L, Litzky LA, Berman AT, Simone CB. Predicted Rate of Secondary Malignancies Following Adjuvant Proton Versus Photon Radiation Therapy for Thymoma. Int J Radiat Oncol Biol Phys 2017; 99:427-433. [PMID: 28871993 DOI: 10.1016/j.ijrobp.2017.04.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/10/2017] [Accepted: 04/14/2017] [Indexed: 12/25/2022]
Abstract
PURPOSE Thymic malignancies are the most common tumors of the anterior mediastinum. The benefit of adjuvant radiation therapy for stage II disease remains controversial, and patients treated with adjuvant radiation therapy are at risk of late complications, including radiation-induced secondary malignant neoplasms (SMNs), that may reduce the overall benefit of treatment. We assess the risk of predicted SMNs following adjuvant proton radiation therapy compared with photon radiation therapy after resection of stage II thymic malignancies to determine whether proton therapy improves the risk-benefit ratio. METHODS AND MATERIALS Ten consecutive patients treated with double-scattered proton beam radiation therapy (DS-PBT) were prospectively enrolled in an institutional review board-approved proton registry study. All patients were treated with DS-PBT. Intensity modulated radiation therapy (IMRT) plans for comparison were generated. SMN risk was calculated based on organ equivalent dose. RESULTS Patients had a median age of 65 years (range, 25-77 years), and 60% were men. All patients had stage II disease, and many had close or positive margins (60%). The median dose was 50.4 Gy (range, 50.4-54.0 Gy) in 1.8-Gy relative biological effectiveness daily fractions. No differences in target coverage were seen with DS-PBT compared with IMRT plans. Significant reductions were seen in mean and volumetric lung, heart, and esophageal doses with DS-PBT compared with IMRT plans (all P≤.01). Significant reductions in SMNs in the lung, breast, esophagus, skin, and stomach were seen with DS-PBT compared with IMRT. For patients with thymoma diagnosed at the median national age, 5 excess secondary malignancies per 100 patients would be avoided by treating them with protons instead of photons. CONCLUSIONS Treatment with proton therapy can achieve comparable target coverage but significantly reduced doses to critical normal structures, which can lead to fewer predicted SMNs compared with IMRT. By decreasing expected late complications, proton therapy may improve the therapeutic ratio of adjuvant radiation therapy for patients with stage II thymic malignancies.
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Affiliation(s)
- J Vogel
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
| | - L Lin
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - L A Litzky
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - A T Berman
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - C B Simone
- Department of Radiation Oncology, Maryland Proton Treatment Center, University of Maryland Medical Center, Baltimore, Maryland
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Verma V, Simone CB, Wahl AO, Beriwal S, Mehta MP. Proton radiotherapy for gynecologic neoplasms. Acta Oncol 2016; 55:1257-1265. [PMID: 27500710 DOI: 10.1080/0284186x.2016.1205218] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Proton beam therapy (PBT) is increasingly being used globally to treat a variety of malignancies. This is the first review assessing PBT for gynecologic neoplasms. Dose distribution to organs-at-risk (OARs), particularly bone marrow (BM), is addressed. Clinical outcomes and toxicity data are detailed. MATERIAL AND METHODS Systematic searches of PubMed, EMBASE, abstracts from meetings of the American Society for Radiation Oncology, Particle Therapy Co-Operative Group, and American Society of Clinical Oncology were conducted for publications. There were no restrictions on publication dates. Sixteen original investigations were identified and analyzed for this review. RESULTS The available evidence for PBT in treating gynecologic cancers is of both low quantity and quality. The most studied scenarios for PBT include treatment of para-aortic lymph nodes, re-irradiation, and as an alternative to brachytherapy, and these also represent indications with the greatest opportunity for demonstrating as yet unproven toxicity reductions. Dosimetric studies have shown significantly decreased dose to OARs, such as the rectum, bladder, bowel, kidneys, BM, and femoral heads. This dose reduction to OARs with PBT is more pronounced within the low-dose volumes than the higher dose volumes, which radiobiologically could be expected to lower second malignancy rates. Clinical data, though no level 1 evidence, show appropriate stage-specific tumor control and outcomes with PBT treatment, along with low toxicity rates. CONCLUSION The existing data, albeit limited, warrant and can help guide larger scale and higher quality studies addressing whether PBT could provide clinically meaningful differences in toxicities and outcomes in women with gynecologic neoplasms.
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Affiliation(s)
- Vivek Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Charles B. Simone
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Andrew O. Wahl
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sushil Beriwal
- Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Minesh P. Mehta
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
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Vogel J, Berman AT, Lin L, Pechet TT, Levin WP, Gabriel P, Khella SL, Singhal S, Kucharczuk JK, Simone CB. Prospective study of proton beam radiation therapy for adjuvant and definitive treatment of thymoma and thymic carcinoma: Early response and toxicity assessment. Radiother Oncol 2016; 118:504-9. [PMID: 26895711 DOI: 10.1016/j.radonc.2016.02.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND PURPOSE Radiation is an important modality in treatment of thymic tumors. However, toxicity may reduce its overall benefit. We hypothesized that double-scattering proton beam therapy (DS-PT) can achieve excellent local control with limited toxicity in patients with thymic malignancies. METHODS AND MATERIALS Patients with thymoma or thymic carcinoma treated with DS-PT between 2011 and 2015 were prospectively analyzed for toxicity and patterns of failure on an IRB-approved study. RESULTS Twenty-seven consecutive patients were evaluated. Patients were a median of 56 years and had thymoma (85%). They were treated with definitive (22%), salvage (15%) or adjuvant (63%) DS-PT to a median of 61.2/1.8 Gy [CGE]. No patient experienced grade ⩾3 toxicity. Acute grade 2 toxicities included dermatitis (37%), fatigue (11%), esophagitis (7%), and pneumonitis (4%). Late grade 2 toxicity was limited to a single patient with chronic dyspnea. At a median follow-up of 2 years, 100% local control was achieved. Three-year regional control, distant control, and overall survival rates were 96% (95% CI 76-99%), 74% (95% CI 41-90%), and 94% (95% CI 63-99%), respectively. CONCLUSIONS This is the first cohort and prospective series of proton therapy to treat thymic tumors, demonstrating low rates of early toxicity and excellent initial outcomes.
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Affiliation(s)
- Jennifer Vogel
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States.
| | - Abigail T Berman
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States
| | - Liyong Lin
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States
| | - Taine T Pechet
- Penn Presbyterian Medical Center, Department of Thoracic Surgery, Philadelphia, United States
| | - William P Levin
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States
| | - Peter Gabriel
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States
| | - Sami L Khella
- Penn Presbyterian Medical Center, Department of Neurology, Philadelphia, United States
| | - Sunil Singhal
- Hospital of the University of Pennsylvania, Department of Thoracic Surgery, Philadelphia, United States
| | - John K Kucharczuk
- Hospital of the University of Pennsylvania, Department of Thoracic Surgery, Philadelphia, United States
| | - Charles B Simone
- Hospital of the University of Pennsylvania, Department of Radiation Oncology, Philadelphia, United States
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Kralik JC, Xi L, Solberg TD, Simone CB, Lin L. Comparing proton treatment plans of pediatric brain tumors in two pencil beam scanning nozzles with different spot sizes. J Appl Clin Med Phys 2015; 16:41-50. [PMID: 26699553 PMCID: PMC5690992 DOI: 10.1120/jacmp.v16i6.5389] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 06/29/2015] [Accepted: 08/05/2015] [Indexed: 11/25/2022] Open
Abstract
Target coverage and organ‐at‐risk sparing were compared for 22 pediatric patients with primary brain tumors treated using two distinct nozzles in pencil beam scanning (PBS) proton therapy. Consecutive patients treated at our institution using a PBS‐dedicated nozzle (DN) were replanned using a universal nozzle (UN) beam model and the original DN plan objectives. Various cranial sites were treated among the patients to prescription doses ranging from 45 to 54 Gy. Organs at risk (OARs) evaluated were patient‐dependent; 15 unique OARs were analyzed, all of which were assessed in at least 10 patients. Clinical target volume (CTV) coverage and organ sparing were compared for the two nozzles using dose‐volume histogram data. Statistical analysis using a confidence‐interval approach demonstrates that CTV coverage is equivalent for UN and DN plans within ±5% equivalence bounds. In contrast, average mean and maximum doses are significantly higher for nearly all 15 OARs in the UN plans. The average median increase over all OARs and patients is approximately 1.7 Gy, with an increase in the 25%–75% of 1.0–2.3 Gy; the median increase to the pituitary gland, temporal lobes, eyes and cochleas are 1.8, 1.7, 0.7, and 2.7 Gy, respectively. The CTV dose distributions fall off slower for UN than for the DN plans; hence, normal tissue structures in close proximity to CTVs receive higher doses in UN plans than in DN plans. The higher OAR doses in the UN plans are likely due to the larger spot profile in plans created with UN beams. In light of the high rates of toxicities in pediatric patients receiving cranial irradiation and in light of selected brain tumor types having high cure rates, this study suggests the smaller DN beam profile is preferable for the advantage of reducing dose to OARs. PACS number: 87.55.D‐
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Mazonakis M, Varveris C, Lyraraki E, Damilakis J. Radiotherapy for stage I seminoma of the testis: Organ equivalent dose to partially in‐field structures and second cancer risk estimates on the basis of a mechanistic, bell‐shaped, and plateau model. Med Phys 2015; 42:6309-16. [DOI: 10.1118/1.4932394] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Michalis Mazonakis
- Department of Medical Physics, Faculty of Medicine, University of Crete, P.O. Box 2208, Iraklion, Crete 71003, Greece
| | - Charalambos Varveris
- Department of Radiotherapy and Oncology, University Hospital of Iraklion, Iraklion, Crete 71110, Greece
| | - Efrossyni Lyraraki
- Department of Radiotherapy and Oncology, University Hospital of Iraklion, Iraklion, Crete 71110, Greece
| | - John Damilakis
- Department of Medical Physics, Faculty of Medicine, University of Crete, P.O. Box 2208, Iraklion, Crete 71003, Greece
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Haque W, Wages C, Zhu XR, Choi S, Pugh TJ, Frank SJ, Lee A, Mahmood U. Proton therapy for seminoma: Case report describing the technique, efficacy, and advantages of proton-based therapy for seminoma. Pract Radiat Oncol 2015; 5:135-40. [PMID: 25413401 DOI: 10.1016/j.prro.2014.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 07/15/2014] [Accepted: 07/28/2014] [Indexed: 02/03/2023]
Affiliation(s)
- Waqar Haque
- Department of Radiation Oncology, University of Texas Medical Branch, Galveston, Texas
| | - Cody Wages
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - X Ronald Zhu
- Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Seungtaek Choi
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Thomas J Pugh
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Steven J Frank
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Andrew Lee
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Usama Mahmood
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas.
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Mazonakis M, Berris T, Lyraraki E, Damilakis J. Radiation therapy for stage IIA and IIB testicular seminoma: peripheral dose calculations and risk assessments. Phys Med Biol 2015; 60:2375-89. [DOI: 10.1088/0031-9155/60/6/2375] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hallemeier CL, Davis BJ, Pisansky TM, Choo R. Late gastrointestinal morbidity in patients with stage I–II testicular seminoma treated with radiotherapy. Urol Oncol 2014; 32:496-500. [DOI: 10.1016/j.urolonc.2013.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 10/03/2013] [Accepted: 10/05/2013] [Indexed: 10/25/2022]
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Abstract
BACKGROUND The therapy of stage I seminoma is under constant change. While surveillance, adjuvant radiotherapy and adjuvant chemotherapy were seen as equal therapeutic alternatives up to a few years ago, recently published studies make it necessary to adopt a more differentiated approach. DISCUSSION In this review, recent data on the long-term effects of adjuvant radiotherapy and chemotherapy, the question of risk stratification as well as the advantages and limitations of a surveillance strategy are discussed.
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Mazonakis M, Berris T, Lyraraki E, Damilakis J. Cancer risk estimates from radiation therapy for heterotopic ossification prophylaxis after total hip arthroplasty. Med Phys 2014; 40:101702. [PMID: 24089892 DOI: 10.1118/1.4820366] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Heterotopic ossification (HO) is a frequent complication following total hip arthroplasty. This study was conducted to calculate the radiation dose to organs-at-risk and estimate the probability of cancer induction from radiotherapy for HO prophylaxis. METHODS Hip irradiation for HO with a 6 MV photon beam was simulated with the aid of a Monte Carlo model. A realistic humanoid phantom representing an average adult patient was implemented in Monte Carlo environment for dosimetric calculations. The average out-of-field radiation dose to stomach, liver, lung, prostate, bladder, thyroid, breast, uterus, and ovary was calculated. The organ-equivalent-dose to colon, that was partly included within the treatment field, was also determined. Organ dose calculations were carried out using three different field sizes. The dependence of organ doses upon the block insertion into primary beam for shielding colon and prosthesis was investigated. The lifetime attributable risk for cancer development was estimated using organ, age, and gender-specific risk coefficients. RESULTS For a typical target dose of 7 Gy, organ doses varied from 1.0 to 741.1 mGy by the field dimensions and organ location relative to the field edge. Blocked field irradiations resulted in a dose range of 1.4-146.3 mGy. The most probable detriment from open field treatment of male patients was colon cancer with a high risk of 564.3 × 10(-5) to 837.4 × 10(-5) depending upon the organ dose magnitude and the patient's age. The corresponding colon cancer risk for female patients was (372.2-541.0) × 10(-5). The probability of bladder cancer development was more than 113.7 × 10(-5) and 110.3 × 10(-5) for males and females, respectively. The cancer risk range to other individual organs was reduced to (0.003-68.5) × 10(-5). CONCLUSIONS The risk for cancer induction from radiation therapy for HO prophylaxis after total hip arthroplasty varies considerably by the treatment parameters, organ site in respect to treatment volume and patient's gender and age. The presented risk estimates may be useful in the follow-up studies of irradiated patients.
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Affiliation(s)
- Michalis Mazonakis
- Department of Medical Physics, Faculty of Medicine, University of Crete, P.O. Box 2208, 71003 Iraklion, Crete, Greece
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Mazonakis M, Berris T, Varveris C, Lyraraki E, Damilakis J. Out-of-field organ doses and associated radiogenic risks from para-aortic radiotherapy for testicular seminoma. Med Phys 2014; 41:051702. [DOI: 10.1118/1.4870376] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Wright AT, Magnaldo T, Sontag RL, Anderson LN, Sadler NC, Piehowski PD, Gache Y, Weber TJ. Deficient expression of aldehyde dehydrogenase 1A1 is consistent with increased sensitivity of Gorlin syndrome patients to radiation carcinogenesis. Mol Carcinog 2013; 54:473-84. [PMID: 24285572 DOI: 10.1002/mc.22115] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 10/28/2013] [Accepted: 11/07/2013] [Indexed: 12/30/2022]
Abstract
Human phenotypes that are highly susceptible to radiation carcinogenesis have been identified. Sensitive phenotypes often display robust regulation of molecular features that modify biological response, which can facilitate identification of the pathways/networks that contribute to pathophysiological outcomes. Here we interrogate primary dermal fibroblasts isolated from Gorlin syndrome patients (GDFs), who display a pronounced inducible tumorigenic response to radiation, in comparison to normal human dermal fibroblasts (NHDFs). Our approach exploits newly developed thiol reactive probes to define changes in protein thiol profiles in live cell studies, which minimizes artifacts associated with cell lysis. Redox probes revealed deficient expression of an apparent 55 kDa protein thiol in GDFs from independent Gorlin syndrome patients, compared with NHDFs. Proteomics tentatively identified this protein as aldehyde dehydrogenase 1A1 (ALDH1A1), a key enzyme regulating retinoic acid synthesis, and ALDH1A1 protein deficiency in GDFs was confirmed by Western blot. A number of additional protein thiol differences in GDFs were identified, including radiation responsive annexin family members and lamin A/C. Collectively, candidates identified in our study have plausible implications for radiation health effects and cancer susceptibility.
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Affiliation(s)
- Aaron T Wright
- Omic Biological Applications, Pacific Northwest National Laboratory, Richland, Washington
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Second malignancies in long-term testicular cancer survivors. Int Urol Nephrol 2013; 46:749-56. [PMID: 24096370 DOI: 10.1007/s11255-013-0554-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/26/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE The objective of the present study is to analyze long-term testicular cancer (TC) survivors focusing on the correlation of therapeutic modalities used, the age of patients and second malignancy (SM) occurrence. PATIENTS AND METHODS A total of 1,367 patients with TC and different subsequent therapeutic procedures were followed up between 1970 and 2012. The occurrence of SM was analyzed by standard incidence ratios (SIR). SM occurred in 96 (7.0 %) patients with primary TC. RESULTS The most frequent SM was TC (SIR 27.4, n = 64); a significantly higher occurrence was observed after primary testicular seminoma. Prostate cancer appeared in 10 patients (SIR 5.2), with a mean age 54.9 years, while the typical age of patients in Slovakia was 71.4 years. Kidney cancer developed in 6 patients, a significant higher SIR was registered only after primary non-seminomas. The mean patient's age was 48.5 years, while the typical age of all male patients in Slovakia was 62.4 years. Other SM had no significantly higher SIR. Colorectal cancer appeared in 8 patients with primary TC, with a mean age 56.0 years, while the typical age of male patients with primary colorectal cancer in Slovakia was 67.1 years. Other non-testicular tumors appeared in 8 patients. SM occurs in 1.5 % of patients following orchiectomy alone, in 4.3 % following radiotherapy, 5.0 % following chemotherapy and in 4.4 % following combined chemo-radiotherapy. CONCLUSIONS Preliminary analyses indicate increased SM occurrence in patients with primary TC in comparison with the general population, and it also occurs in younger age at the time of SM diagnosis.
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Abstract
PURPOSE OF REVIEW To discuss several important developments in the diagnosis, management, and risk stratification of testicular germ cell tumors (TGCTs) in the past year. RECENT FINDINGS Germ cell function and tumorigenesis may be influenced by exposure to a variety of agents, including metals and cannabinoids. Genome-wide association studies have identified variants in several genes that may produce susceptibility to the development of testicular malignancies, and expression of certain proteins predicts a poorer prognosis and may, thus, play a role in neoplastic progression. Retroperitoneal lymph node dissection continues to play a crucial role in definitive treatment of patients with nonseminoma germ cell tumor, whereas radiotherapy, as a standard treatment for early-stage seminoma, has been declining due both to the efficacy of platinum-based chemotherapy and to the increased risk of radiation-related secondary malignancies. Advanced and platinum-refractory disease states continue to be challenging entities in terms of optimizing therapy and outcome. SUMMARY Preclinical and clinical studies continue to enhance our insights into the complex biology of TGCTs, and are helping to further refine risk stratification and optimize treatment of patients with TGCTs.
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Wilder RB, Buyyounouski MK, Efstathiou JA, Beard CJ. Radiotherapy Treatment Planning for Testicular Seminoma. Int J Radiat Oncol Biol Phys 2012; 83:e445-52. [DOI: 10.1016/j.ijrobp.2012.01.044] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 01/05/2012] [Accepted: 01/12/2012] [Indexed: 11/16/2022]
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