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Long-term follow-up after adjuvant chemotherapy in completely resected early stage ovarian carcinoma
Objective:
To evaluate the impact of standardized staging, surgery and adjuvant chemotherapy on survival of patients with completely resected early ovarian carcinoma.
Study Design:
We performed a multicentric retrospective analysis of 283 patients with early stage ovarian carcinoma consecutively treated between 1977 and 1993. Borderline tumours were excluded. A comprehensive staging was performed during initial laparotomy. Patients were treated by standardized surgical resection and all excepted stage IA received a 6-course adjuvant chemotherapy.
Results:
Eighty patients were excluded because of incorrect substaging, inadequate surgery and adjuvant therapy. The analysis was performed on 203 patients with completely resected early stage ovarian cancer (139, stage I; 64, stage II). Relapse-free survival and overall survival rates for stage I were 66 and 69%, respectively. Relapse-free survival and overall survival rates for stage II were 57 and 61% respectively. Median time of relapse was 18 months (range, 1-107 months). Sites of relapse were peritoneum (45%), retroperitoneal lymph nodes (37%) and distant metastases (18%). Relapses occurring within 18 months had a median survival after relapse of 9 months while later relapses had a median survival of 22 months (P = 0.005). There was no significant difference in relapse-free and overall survival according to the age, performance status and pathology. Cisplatin-based chemotherapy improved the 10-year overall survival of patients with stage IIB and IIC as compared to chemotherapy without cisplatin (oral melphalan. CMF regimen); 91 vs. 33% (P = 0.012) and 75 vs. 42% (P = 0.05), respectively. Cisplatin-based regimens did not improve survival in stage IA, IB and IIA.
Conclusions:
Early ovarian cancers have a good prognosis after comprehensive staging, complete surgery and adjuvant chemotherapy. Cisplatin-based regimens compared to melphalan and CMF showed a significant increase of survival in stage IIB and IIC. Prognosis of relapse depends on the relapse-free interval duration.