Oncologic outcomes of adjuvant chemotherapy alone after radical surgery for stage IB-IIA cervical cancer patients

Objective: To evaluate the oncologic outcomes of adjuvant chemotherapy (CT) alone after radical surgery. Methods: We retrospectively reviewed the medical records of patients who underwent type C radical hysterectomy and pelvic lymphadenectomy with or without paraaortic lymphadenectomy for stage IB-IIA cervical cancer from March 2006 to December 2014 at 2 academic medical centers in Korea. Adjuvant CT alone for patients who met the Sedlis criteria or had lymph node (LN) involvement. Chemotherapeutic regimens consisted of either platinum alone or platinum-based combination. Results: A total of 101 consecutive patients were included in the analysis. The median age was 46.0 years (range, 23-73). Seventy-four patients (73.3%) were clinically staged as IB1; 23 and 4 patients as IB2 and IIA, respectively. The median number of retrieved pelvic and paraaortic LNs (PALNs) were 55.0 (range, 16-101) and 10.0 (range, 2-30), respectively. LN involvement was observed in 25 patients (24.8%). After the median follow-up of 65 months, 14 patients (13.9%) developed disease recurrence. In all patients, the estimated 3-year disease-free survival (DFS) rate and 5-year overall survival (OS) rate were 90.7% and 90.6%, respectively. In patients who met the Sedlis criteria, the 3-year DFS and 5-year OS rates were 94.6% and 90.6%, respectively. Patients with LN metastasis showed a 3-year DFS rate of 79.4% and a 5-year OS rate of 90.6%. Conclusion: Adjuvant CT alone could be reasonable option for patients with surgical-pathologic risk factors after radical surgery in stage IB-IIA cervical cancer.