Craniotomy for central nervous system metastases in epithelial ovarian carcinoma

Although central nervous system (CNS) metastases from epithelial ovarian carcinoma are rare, recent studies indicate that the incidence may be increasing. Numerous series have reported various modalities for treatment with median survivals of 3 to 5 months, but the role of craniotomy has not been specifically addressed.

We conducted a retrospective review of all patients who underwent craniotomy between 1989 and 2001 for pathologically confirmed recurrent epithelial ovarian cancer metastatic to the CNS.

We identified 14 patients who had a mean age at diagnosis of 59.3 years (range, 45 to 70). Distribution by stage and grade was as follows: Stage I, 0; II, 1; III, 12; and IV, 1; and grade 1,0; 2,4; and 3,10. Histologic distribution was as follows: papillary serous, 9; endometrioid, 2; mixed papillary serous and endometrioid, 1; carcinosarcoma, 1; and poorly differentiated adenocarcinoma, 1. Six patients had optimal primary cytoreduction, while 7 had suboptimal primary cytoreduction. All patients received initial platinum-based chemotherapy. Ten of 14 patients underwent second-look evaluation, and in 8 patients the findings were negative. The median time from initial diagnosis of ovarian carcinoma to CNS relapse was 3.5 years (range, 1.3 to 8.2). In 7 patients (50%), the CNS recurrence was the first site of relapse. Eight patients (57%) had extracranial disease at the time of craniotomy. Distribution of CNS lesions were as follows: supratentorial, 12; and cerebellar, 2. The mean operative time for craniotomy was 178 min (range, 70 to 305). The average blood loss was 125 mL (range, 20 to 250). The only major operative complications were deep vein thromboses that developed in two patients. No patient developed a neurologic deficit as a result of craniotomy. One patient died of progressive disease 37 days after surgery. Postoperative treatment included whole-brain radiation in 11 patients, chemotherapy in 4, and hormonal therapy in 4. Four patients (29%) had a CNS relapse after craniotomy. The median survival of patients after craniotomy was 18 months, and the 1- and 2-year survival rates were 66% (95% confidence interval (CI): 43-100) and 39% (95% CI: 17-90), respectively.

Despite optimal cytoreduction, platinum-based chemotherapy, and negative second-look surgical assessment, patients with ovarian cancer can fail distantly with CNS metastases. Craniotomy with adjuvant radiation therapy can provide control of brain metastases in the majority of these patients and may result in improved survival over radiation therapy alone in selected patients.