Preoperative adjuvant chemotherapy in the treatment of cervical cancer stage Ib, IIa, and IIb with bulky tumor

Abstract

Thirty-five previously untreated patients with stage Ib, IIa, and IIb squamous cell carcinoma of uterine cervix with bulky mass (more than 4 cm) were treated with initial chemotherapy of vinblastine, bleomycin, and cis-platinum combined regimen (VBP, one to five courses) and subsequent radical surgery. The effectiveness of the preoperative chemotheapy was evaluated in the surgical specimen. The overall clinical response rate was 89% and included a complete response in 16 (46%) and a partial response in 15 patients (43%). There were no differences in the response rate by age, stage, or the geographic contour of the tumor. The number of chemotherapeutic courses correlated well with the response of the primary tumor ( P = 0.0004) up to three courses. Histologic examination of the resected primary tumor revealed no evidence of disease (Grade IV) in 44% of complete responders, microscopic foci (Grade III) in 38% (6), and macroscopic disease (Grade II) in 18% (3). Of 15 patients with stage IIb, 11 (73%) had a stage-down. Lymphnode metastases after chemotherapy were found in 26% ( 9 35 ) of the patients. All nodal metastases were found among the patients who had a partial response or a stable disease, and none was found in those with a complete response ( P = 0.0029). This preliminary study suggests that initial chemotherapy before surgery is effective in reducing tumor volume or stage of the disease providing better circumstances for surgery, offers selection of high-risk groups of patients requiring additional chemotherapy, and might be able to eliminate effectively diseases in lymphnodes and possibly micrometastases. This regimen is now being evaluated to test its impact on survival.