TY - JOUR
T1 - Value of combined adjuvant chemotherapy and radiation on survival for stage III uterine cancer
T2 - Is less radiation equal to more?
AU - Wang, Chiachien Jake
AU - Christie, Alana
AU - Folkert, Michael R.
AU - Xie, Xian Jin
AU - Albuquerque, Kevin
N1 - Publisher Copyright:
© 2018. Asian Society of Gynecologic Oncology, Korean Society of Gynecologic Oncology.
PY - 2018/7
Y1 - 2018/7
N2 - Objective: Locally advanced endometrioid adenocarcinoma (LA-EAC) accounts for the majority of deaths for this cancer, yet there is no consensus on adjuvant treatment after surgery. Past studies suggest that combined modality treatment (CMT) may improve outcomes over treatment with chemotherapy (CT) or radiation therapy (RT, either external beam radiotherapy [EBRT] or vaginal brachytherapy [VBT]) alone. Using a large US-based population-based registry, we evaluated adjuvant CMT in LA-EAC and the relative benefit of regional EBRT compared to focused VBT. Methods: We studied patients diagnosed with Stage III LA-EAC between 2004 and 2013 from the National Cancer Data Base (NCDB). We used Cox regression and a log-rank test to assess survival based on treatment with CT alone, EBRT alone, VBT alone, or CMT with EBRT and/or VBT. We used a χ2 test to compare covariates between patients receiving CMT with EBRT or VBT. Results: Patients who received CMT had better survival than those who received CT or EBRT/VBT alone. Compared to CMT with VBT, patients who received CMT with EBRT were slightly older and had more advanced-stage or positive nodes, and fewer had lymph node surgery. We found no survival difference between CMT with EBRT and CMT with VBT even when categorizing patients as high or low risk according to age, grade, and stage (low-risk p=0.3460; high-risk p=0.2158). Conclusion: CMT was associated with superior survival outcomes compared to monotherapy. We observed no survival difference between radiation modalities in CMT, which highlights the effectiveness of a more focused treatment like brachytherapy.
AB - Objective: Locally advanced endometrioid adenocarcinoma (LA-EAC) accounts for the majority of deaths for this cancer, yet there is no consensus on adjuvant treatment after surgery. Past studies suggest that combined modality treatment (CMT) may improve outcomes over treatment with chemotherapy (CT) or radiation therapy (RT, either external beam radiotherapy [EBRT] or vaginal brachytherapy [VBT]) alone. Using a large US-based population-based registry, we evaluated adjuvant CMT in LA-EAC and the relative benefit of regional EBRT compared to focused VBT. Methods: We studied patients diagnosed with Stage III LA-EAC between 2004 and 2013 from the National Cancer Data Base (NCDB). We used Cox regression and a log-rank test to assess survival based on treatment with CT alone, EBRT alone, VBT alone, or CMT with EBRT and/or VBT. We used a χ2 test to compare covariates between patients receiving CMT with EBRT or VBT. Results: Patients who received CMT had better survival than those who received CT or EBRT/VBT alone. Compared to CMT with VBT, patients who received CMT with EBRT were slightly older and had more advanced-stage or positive nodes, and fewer had lymph node surgery. We found no survival difference between CMT with EBRT and CMT with VBT even when categorizing patients as high or low risk according to age, grade, and stage (low-risk p=0.3460; high-risk p=0.2158). Conclusion: CMT was associated with superior survival outcomes compared to monotherapy. We observed no survival difference between radiation modalities in CMT, which highlights the effectiveness of a more focused treatment like brachytherapy.
KW - Brachytherapy
KW - Carcinoma, endometrioid
KW - Chemoradiotherapy
KW - External beam radiation
KW - Stage III
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U2 - 10.3802/jgo.2018.29.e49
DO - 10.3802/jgo.2018.29.e49
M3 - Article
C2 - 29770620
AN - SCOPUS:85059798804
SN - 2005-0380
VL - 29
JO - Journal of Gynecologic Oncology
JF - Journal of Gynecologic Oncology
IS - 4
M1 - e49
ER -