Incorporation of whole pelvic radiation into treatment of stage IVB cervical cancer: A novel treatment strategy

Objectives Chemotherapy is the standard treatment in stage IVB cervical cancer (CC). However, given that many women have a significant pelvic disease burden, whole pelvic radiation (WPR) in addition to chemotherapy for primary treatment may have utility. The aim of this study was to compare the overall survival (OS) and complication rates between women who received both WPR and chemotherapy (CT) versus CT alone in the management of stage IVB CC. Methods A multi-institutional, IRB-approved, retrospective review of patients (pts) with stage IVB CC, diagnosed between 2005 and 2015, was performed. Descriptive statistics of the demographic, oncologic, and treatment characteristics were performed. OS was estimated using the Kaplan Meier method. Results A total of 126 pts met inclusion criteria. Thirty one patients elected for hospice care at diagnosis and were excluded from further analysis. In the remaining population, median age was 53 yrs. The majority (72%) had squamous cell carcinoma and 82% had FIGO grade 2 or 3 tumors. Thirty four patients (35.8%) received WPR in addition to CT as a part of planned primary therapy and 64.2% (n = 61) received CT alone, with 88.2% and 80.3% receiving a cisplatin-based chemotherapy regimen, respectively. The OS was significantly longer in the WPR with CT group (41.6 vs 17.6 mo, p < 0.01). The rates of ureteral obstruction, vaginal bleeding, pelvic infection, pelvic pain, and fistula were not significantly different between the 2 groups (all p > 0.05). Conclusion This study found WPR in addition to CT gives a significant OS benefit. Further study is warranted to determine which subgroups may benefit the most from this novel treatment strategy.