[A case of poorly differentiated ovarian serous adenocarcinoma responding favorably to etoposide and cisplatin].

A case of primary ovarian cancer responding favorably to EP therapy is reported. The patient is a 41-year-old woman with stage IV poorly differentiated serous papillary adenocarcinoma of the ovary. At 21 days after the optimal initial surgical exploration, multiple tumor nodules recurred in peritoneal cavity, and one of them had a diameter of 5 cm. Since we had found previously that poorly differentiated adenocarcinoma of the ovary responded to etoposide by a disease-oriented screening system, the patient was treated by combination chemotherapy (etoposide 100 mg/body/day x 5 days + cisplatin 20 mg/body/day x 5 days) as first line chemotherapy. After 2 cycles of chemotherapy, the tumor disappeared on CT, and the serum CA 125 level decreased to 14 U/ml from 2,050 U/ml. She was evaluated as a complete response after 5 cycles of combination chemotherapy, and only mild side-effects were recognized. These results demonstrate that the combination chemotherapy of etoposide and cisplatin might be recommended as first-line chemotherapy for poorly differentiated serous adenocarcinoma of the ovary.