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Zhang Y, Wang C, Zhao Z, Cheng L, Xu S, Xie P, Xie L, Zhang S. Survival outcomes of 2018 FIGO stage IIIC versus stages IIIA and IIIB in cervical cancer: A systematic review with meta-analysis. Int J Gynaecol Obstet 2024; 165:959-968. [PMID: 37950594 DOI: 10.1002/ijgo.15218] [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: 03/31/2023] [Revised: 08/02/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023]
Abstract
OBJECTIVE To assess the difference in survival outcomes between stage IIIC and stages IIIA and IIIB in the 2018 FIGO cervical cancer staging system. METHODS The PubMed, EMBASE, MEDLINE and Web of Science were searched for articles published from November 1, 2018 to January 31, 2023. Articles published in English were considered. The included studies compared the survival outcomes of patients with cervical cancer in FIGO 2018 stage IIIC with those in stages IIIA and IIIB. Studies focused on rare histopathological types were excluded. The statistical analyses were performed using Stata 17 software. The endpoints were overall survival (OS) and progression-free survival (PFS). RESULTS Ten retrospective cohort studies were eligible, involving 2113 (6.2%), 9812 (28.6%), 44 (0.1%), 10 171 (29.7%), 11 677 (34.1%) and 445 (1.3%) patients in stage IIIA, IIIB, IIIA&B, IIIC, IIIC1, and IIIC2, respectively. In the OS group, stage IIIC/C1 was significantly associated with superior survival compared with stage IIIA (hazard risk [HR] 0.62, 95% confidence interval [CI] 0.41-0.93, P = 0.022; I2 = 92.9%) and stage IIIB(A&B) (HR 0.56, 95% CI 0.44-0.71, P < 0.001; I2 = 94.0%). The FIGO 2018 stage IIIC2 was not associated with an increased mortality risk compared with stage IIIA and stage IIIB(A&B). In the PFS group, the outcome of FIGO 2018 stage IIIC/C1 was similar to stage IIIA (HR 0.66, 95% CI 0.27-1.64, P = 0.371; I2 = 65.6%), but better than stage IIIB(A&B) (HR 0.75, 95% CI 0.68-0.83, P < 0.001; I2 = 0.0%). The FIGO 2018 stage IIIC2 has similar PFS outcomes to stage IIIA and stage IIIB(A&B). CONCLUSION Our findings demonstrate that survival outcomes of stage IIIC are no worse than those of stage IIIA and stage IIIB in the 2018 FIGO cervical cancer staging system. In cervical cancer, FIGO 2018 stage IIIC1 has significantly better OS outcomes than stage IIIA and stage IIIB.
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Affiliation(s)
- Ying Zhang
- Department of Obstetrics and Gynecology, Jining NO. 1 People's Hospital, Jining, China
| | - Changhe Wang
- Department of Obstetrics and Gynecology, Jining NO. 1 People's Hospital, Jining, China
| | - Zeyi Zhao
- Department of Oncology, Jining NO. 1 People's Hospital, Jining, China
| | - Lei Cheng
- Department of Gynecology Oncology, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Shuai Xu
- Department of Obstetrics and Gynecology, Jining NO. 1 People's Hospital, Jining, China
| | - Pengmu Xie
- Department of Obstetrics and Gynecology, Jining NO. 1 People's Hospital, Jining, China
| | - Lin Xie
- Department of Obstetrics and Gynecology, Jining NO. 1 People's Hospital, Jining, China
| | - Shiqian Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
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Chen CS, Wang YM, Huang EY. Comparative Analysis of Oncologic Outcomes in Patients with Squamous Cell Carcinoma of the Uterine Cervix with High-Risk Features for Para-Aortic Recurrence: Prophylactic Extended-Field versus Pelvic Chemoradiotherapy. Cancer Manag Res 2024; 16:269-279. [PMID: 38585434 PMCID: PMC10999217 DOI: 10.2147/cmar.s451137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/13/2024] [Indexed: 04/09/2024] Open
Abstract
Purpose To compare the oncologic outcomes of prophylactic extended-field radiation therapy (EFRT) and whole pelvic radiation therapy (WPRT) in cervical patients at high risk of para-aortic lymph node (PALN) recurrence. Patients and Methods From July 1999 to May 2022, a total of 115 patients with cervical cancer and high-risk features of PALN recurrence based on tumor markers, positive LNs and extensive parametrial invasion were retrospectively analyzed. All patients had received EFRT or WPRT at a dose of 39.6-45 Gy and concurrent chemotherapy. In EFRT, coverage was extended to include the para-aortic region below the level of the left renal vein or T12. Results Twenty-eight and 87 patients underwent EFRT and WPRT, respectively. For patients who survived, the median follow-up time was 60.8 months (range 9.2-131.6 months) in the EFRT group and 115.9 months (range 16.9-212.1 months) in the WPRT group. The 5-year overall survival (OS) and pelvic, extrapelvic and PALN recurrence rates were 87.7% vs 60.8% (p=0.019), 10.9% vs 25.3% (p=0.119), 18.1% vs 45.8% (p=0.011), and 0% vs 30.4% (p=0.005), respectively, between the EFRT and WPRT groups. Multivariate analysis revealed that EFRT and 2018 FIGO stage IV disease status were significant predictors of OS and extrapelvic recurrence. Conclusion Compared to WPRT, EFRT significantly improved OS and reduced extrapelvic and PALN recurrence in patients with cervical cancer with high-risk recurrence features.
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Affiliation(s)
- Chung-Shih Chen
- Department of Radiation Oncology & Proton and Radiation Therapy Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung City, 833, Taiwan
| | - Yu-Ming Wang
- Department of Radiation Oncology & Proton and Radiation Therapy Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung City, 833, Taiwan
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital, School of Medicine, College of Medicine, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
| | - Eng-Yen Huang
- Department of Radiation Oncology & Proton and Radiation Therapy Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung City, 833, Taiwan
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital, School of Medicine, College of Medicine, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
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Zhang W, Yu H, Xiu Y, Meng F, Wang Z, Zhao K, Wang Y, Chen Z, Liu J, Chen J, Sun B. Clinical Outcomes and Prognostic Factors in Stage III C Cervical Cancer Patients Treated with Radical Radiotherapy or Radiochemotherapy. Technol Cancer Res Treat 2024; 23:15330338241254075. [PMID: 38720626 PMCID: PMC11085003 DOI: 10.1177/15330338241254075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 05/02/2023] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
Objective: Since the update of the 2018 International Federation of Gynecology and Obstetrics (FIGO) staging criteria, there have been few reports on the prognosis of stage III C cervical cancer. Moreover, some studies have drawn controversial conclusions, necessitating further verification. This study aims to evaluate the clinical outcomes and determine the prognostic factors for stage III C cervical cancer patients treated with radical radiotherapy or radiochemotherapy. Methods: The data of 117 stage III C cervical cancer patients (98 III C1 and 19 III C2) who underwent radical radiotherapy or radiochemotherapy were retrospectively analyzed. We evaluated 3-year overall survival (OS) and disease-free survival (DFS) using the Kaplan-Meier method. Prognostic factors were analyzed using the Log-rank test and Cox proportional hazard regression model. The risk of para-aortic lymph node metastasis (LNM) in all patients was assessed through Chi-squared test and logistic regression analysis. Results: For stage III C1 and III C2 patients, the 3-year OS rates were 77.6% and 63.2% (P = .042), and the 3-year DFS rates were 70.4% and 47.4% (P = .003), respectively. The pretreatment location of pelvic LNM, histological type, and FIGO stage was associated with OS (P = .033, .003, .042, respectively); the number of pelvic LNM and FIGO stage were associated with DFS (P = .015, .003, respectively). The histological type was an independent prognostic indicator for OS, and the numbers of pelvic LNM and FIGO stage were independent prognostic indicators for DFS. Furthermore, a pelvic LNM largest short-axis diameter ≥ 1.5 cm and the presence of common iliac LNM were identified as high-risk factors influencing para-aortic LNM in stage III C patients (P = .046, .006, respectively). Conclusions: The results of this study validated the 2018 FIGO staging criteria for stage III C cervical cancer patients undergoing concurrent chemoradiotherapy. These findings may enhance our understanding of the updated staging criteria and contribute to better management of patients in stage III C.
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Affiliation(s)
- Wenting Zhang
- School of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Hong Yu
- Jilin Province Institute of Cancer Prevention and Treatment, Jilin Province Cancer Hospital, Changchun, China
| | - Yuting Xiu
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Fanxu Meng
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Zhuo Wang
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Kangkang Zhao
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Yunlong Wang
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Zhishen Chen
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
| | - Juntian Liu
- School of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Jie Chen
- School of Clinical Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Baosheng Sun
- Department of Radiotherapy, Jilin Province Cancer Hospital, Changchun, China
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Mauro GP, de Aquino Calheiros V, Vonsowski MS, Avelar T, de Andrade Carvalho H. Curative treatment for stage IIIC2 cervical cancer: what to expect? Rep Pract Oncol Radiother 2023; 28:332-339. [PMID: 37795398 PMCID: PMC10547400 DOI: 10.5603/rpor.a2023.0036] [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: 02/26/2023] [Accepted: 06/05/2023] [Indexed: 10/06/2023] Open
Abstract
Background Since the GOG125 study, treating radically patients with positive para-aortic lymph nodes has been a valid approach. Nevertheless, literature lacks data on how to better treat these patients since they are usually excluded from trials. In this study, we aimed to report the outcomes of patients with advanced cervical cancer and positive para-aortic lymph nodes (PAN) treated in a single tertiary/academic institution and try to identify variables that may impact survival. Materials and methods We retrospectively reviewed patients with positive para-aortic lymph nodes treated in our institution. Demographic variables and treatment options were assessed and their impact on overall survival (OS), locorregional control, distant metastasis free survival, and para-aortic lymph node progression was analyzed. Results We assessed 65 patients treated from April 2010 to May 2017. Median OS was 38.7 months. Median locorregional and para-aortic progression free survivals were not reached. Median distant metastasis progression-free survival was 64.3 months. Better ECOG performance status (p > 0.001), concurrent chemotherapy (p = 0.031), and brachytherapy (p = 0.02) were independently related to better overall survival. Conclusion Patients with current stage IIIC2 cervix cancer may present long term survival. Treating positive PAN cervical cancer patients with concurrent chemoradiation including brachytherapy with curative intent should be standard. Poor PS and more advanced pelvic disease may represent a higher risk for worse outcomes. Distant metastases are still a challenge for disease control.
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Affiliation(s)
- Geovanne Pedro Mauro
- Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Santa Cruz Oncology Center, Santa Cruz Japanese Hospital, São Paulo, SP, Brazil
| | - Vinicius de Aquino Calheiros
- Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Matheus Sorgi Vonsowski
- Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Talita Avelar
- Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Heloisa de Andrade Carvalho
- Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Santa Cruz Oncology Center, Santa Cruz Japanese Hospital, São Paulo, SP, Brazil
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Li H, Wang S, Liu Y, Wang T, Jin S, Liu Z. Prophylactic extended-field irradiation for locally advanced cervical cancer. Gynecol Oncol 2022; 166:606-613. [PMID: 35868881 DOI: 10.1016/j.ygyno.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/03/2022] [Accepted: 07/10/2022] [Indexed: 11/04/2022]
Abstract
Concomitant chemoradiotherapy is the standard treatment for locally advanced cervical cancer. Pelvic irradiation is commonly recommended for patients with negative para-aortic lymph nodes(PALNs). However, owing to the development of imaging-guided brachytherapy, distant failure has become the main failure pattern. The PALNs are a vital site of distant metastasis, and the para-aortic region may contain occult microscopic metastases that are barely detected owing to imaging technology restriction. The prognostic of patients who experienced PALN failure is dismal. Typically, there are four ways to decrease PALN failure. First, surgical staging can be performed to assess the occurrence of metastasis in the para-aortic region; however, the application of surgical staging is decreasing owing to controversial survival benefits and accompanying complications of surgery. Second, regular imaging surveillance and timely salvage of early recurrences could reduce PALN failure. Third, better systemic adjuvant therapy could be recommended since it has enormous potential to reduce distant metastases and improve overall survival. Fourth, performing prophylactic extended-field irradiation (EFI), including pelvic and para-aortic region irradiation, can sterilize occult microscopic metastases in the para-aortic region and improve survival. Prior investigations have revealed that prophylactic EFI could reduce PALN failure as well as distant metastasis and present the benefit of survival. Yet, owing to the serious morbidity induced by enlarged irradiation field in the era of conventional irradiation techniques, further research on EFI is stagnated. Nowadays, with the development of new technologies, intensity modulated radiation therapy can deliver a higher dose to tumors with acceptable toxicity. Prophylactic EFI regained attention. However, the inclusion criteria of prophylactic EFI in existing studies reveal great discrepancies. Thus, it is urgent to precisely identify indications for better survival and lower complications in patients with cervical cancer. In this review, we identify indications and summary guidelines for prophylactic EFI, which may provide a foundation for further trials and clinical applications.
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Affiliation(s)
- Huanhuan Li
- Department of radiation oncology, The Second affiliated Hospital of Jilin University, Changchun 130041, China
| | - Shu Wang
- Department of radiation oncology, The Second affiliated Hospital of Jilin University, Changchun 130041, China
| | - Yingying Liu
- Department of radiation oncology, The Second affiliated Hospital of Jilin University, Changchun 130041, China
| | - Tiejun Wang
- Department of radiation oncology, The Second affiliated Hospital of Jilin University, Changchun 130041, China
| | - Shunzi Jin
- NHC Key Laboratory of Radiobiology,Jilin University, Changchun 130021, China
| | - Zhongshan Liu
- Department of radiation oncology, The Second affiliated Hospital of Jilin University, Changchun 130041, China.
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Pinto PJJ, Chen MJ, Santos Neto E, Faloppa CC, De Brot L, Guimaraes APG, da Costa AABA, Baiocchi G. Prognostic factors in locally advanced cervical cancer with pelvic lymph node metastasis. Int J Gynecol Cancer 2022; 32:239-245. [DOI: 10.1136/ijgc-2021-003140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/13/2022] [Indexed: 12/24/2022] Open
Abstract
ObjectiveTo evaluate the prognostic impact of clinical and pathological variables and patterns of recurrence in patients with locally advanced cervical cancer with pelvic lymph node involvement (stage IIIC1 according to the 2018 FIGO Staging System).MethodsWe retrospectively analyzed 62 patients with locally advanced cervical cancer treated with curative intent with radiotherapy associated with chemotherapy in AC Camargo Cancer Center from January 2007 to December 2018.ResultsLymph node involvement was assessed by CT, MRI and positron emission tomography (PET)/CT in 28 (45.2%), 20 (32.3%) and 14 (22.6%) patients, respectively. The median tumor size was 5.0 cm and 72.6% of cases were squamous cell carcinomas. The median number of positive pelvic lymph nodes was three, and the median size of lymph nodes was 24 mm. Twenty-two (35.5%) patients had recurrence and 50% had only one site of recurrence. The sites of recurrence were pelvic, para-aortic and distant in 12 (19.4%), 6 (9.7%) and 16 (25.8%) patients, respectively. The 3 year overall and disease-free survival were 70.8% and 64.6%, respectively. Patients with adenocarcinoma had worse disease-free survival (HR 2.38; 95% CI 1.01 to 5.60; p=0.047) and overall survival (HR 2.99; 95% CI 1.14 to 7.75; p=0.025) compared with squamous cell carcinoma. In multivariate analysis, metastatic pelvic lymph node size of >2.5 cm (HR 4.38; 95% CI 1.65 to 11.6; p=0.003) and incomplete response to radiotherapy (HR 5.14; 95% CI 1.60 to 16.4; p=0.006) maintained the negative impact for overall survival.ConclusionsWe found that pelvic lymph node size and incomplete response to radiotherapy negatively impact overall survival in patients with advanced cervical cancer with pelvic lymph node involvement. This finding may help to stratify risk in this group of patients.
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Zhang G, Wang C, Ma C, Miao L, He F, Fu C. A Novel Risk Factor for Para-Aortic Lymph Node Recurrence After Definite Pelvic Radiotherapy in Stage IIIB Cervical Cancer. Technol Cancer Res Treat 2022; 21:15330338221141541. [DOI: 10.1177/15330338221141541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background: Studies determining which patients with International Federation of Gynecology and Obstetrics (FIGO) stage IIIB disease benefit from prophylactic extended-field irradiation (EFRT), which can reduce para-aortic lymph node (PALN) failure rates, are limited. The study was designed to evaluate the value of the controlling nutritional status (CONUT) score as a risk factor for predicting PALN recurrence and identifying potential indications of prophylactic EFRT. Methods: From 2010 to 2015, a retrospective review was conducted among patients with FIGO stage IIIB cervical cancer who were treated with definitive pelvic radiotherapy or concurrent chemoradiotherapy. We analyzed para-aortic lymph node metastasis-free survival (PALNMFS) using Kaplan-Meier curves. Multivariate analyses were performed using Cox regression models. Results: A total of 116 patients with FIGO stage IIIB cervical cancer were included in the study and the median follow-up was 42.2 months (range: 3.5-104.2 months). Multivariate analysis revealed that the CONUT score (HR: 3.141; 95% CI: 2.321-5.436; P < .001) and ≥3 pelvic lymph node metastases (HR: 2.235; 95% CI: 1.428-11.242; P < .001) were independent risk predictors of PALNMFS. Compared with the low CONUT group (score<3), the high CONUT group (score≥3) was associated with a significantly worse 3-year disease-free survival rate (46.9 vs 69.5%, P = .001), a significantly lower 3-year overall survival rate (68.5 vs 79.7%, P = .016) and a significantly lower PALNMFS rate (74.8 vs 96.4%, P < .001). Conclusions: A high CONUT score (score≥3) and ≥3 pelvic metastatic lymph nodes were significant predictors of PALNMFS after pelvic radiation in FIGO stage IIIB cervical cancer patients. Patients with these risk factors might benefit from prophylactic EFRT.
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Affiliation(s)
- Guangyu Zhang
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, China
| | - Cong Wang
- Department of Gynecology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Changdong Ma
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, China
| | - Li Miao
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, China
| | - Fangfang He
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, China
| | - Chunli Fu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
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Wang D, Yang B, Wang W, Liu X, Liang Y, Sun S, Ma J, Zhou B, Hu K, Zhang F. Higher Dose to Organs at Risk: The Unintended Consequences of Intravenous Contrast Use in Computed Tomography Simulation for Cervical Cancer. Pract Radiat Oncol 2021; 11:534-543. [PMID: 34419624 DOI: 10.1016/j.prro.2021.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 12/14/2022]
Abstract
PURPOSE To compare the volumes of interest and doses to the organs at risk on contrast and noncontrast scans in patients with cervical cancer who underwent prophylactic extended-field radiation therapy (EFRT). METHODS AND MATERIALS We reviewed twenty cervical cancer patients treated with prophylactic EFRT at Peking Union Medical College Hospital between March 2021 and April 2021. Each patient underwent noncontrast and contrast scans during simulation. All structures were contoured, and radiation therapy plans were created based on both scans. Student t test and Pearson correlation coefficient test were performed. RESULTS Compared with the noncontrast scan, on the contrast scan, the mean volume of the inferior vena cava expanded by 44% (P ≤ .001), and the mean volume of the para-aortic nodal clinical target volume increased by 17% (P ≤ .001). For the second portion of the duodenum, the V30 (38.2% vs 43.8%, P = .038), V35 (27.6% vs 35.1%, P = .002), V40 (18.3% vs 26.3%, P = .014), V45 (11.2% vs 18.5%, P = .008), and V50 (4.2% vs 9.1%, P = .005) were significantly lower on the noncontrast scan than on the contrast scan. For the third portion of the duodenum, the V45 (78.4% vs 81.6%, P = .03) and V50 (59.7% vs 67%, P ≤ .001) were significantly lower on the noncontrast scan than on the contrast scan. For the right kidney, the V5, V10, V15, V20, and V25 on the contrast and noncontrast scans were 85.4% versus 79.8% (P = .013), 52.5% versus 45.6% (P = .021), 25.6% versus 20.1% (P = .003), 11.1% versus 7.5% (P = .001), and 3.8% versus 2.3% (P = .027), respectively. CONCLUSIONS Compared with the noncontrast scan, expansion of the inferior vena cava on the contrast scan can lead to excessive contouring and an overdose to the duodenum and right kidney in cervical cancer patients treated with prophylactic EFRT.
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Affiliation(s)
- Dunhuang Wang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bo Yang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Weiping Wang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaoliang Liu
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yongguang Liang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shuai Sun
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jiabin Ma
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bing Zhou
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ke Hu
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Fuquan Zhang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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