[Primary non-Hodgkin's lymphoma of the ovary--report of 5 cases].

Five cases of primary non-Hodgkin's lymphoma of the ovary (OPNHL) are reported. All were B cell lymphomas (1 small cleaved, 2 non-cleaved and 2 cleaved non-cleaved lymphoma) and treated with operation combined with chemotherapy, 2 of whom also received radiotherapy. One case died 15 months after operation, 4 are still alive, and 2 of these 4 have survived for over 3 years. The clinical manifestations of OPNHL are similar to those of ovarian carcinoma, therefore, it is difficult to diagnose this disease before operation. Histologically, it is important to differentiate OPNHL from granulosa cell tumor and dysgerminoma. Debulking operation should be attempted and timely chemotherapy and/or radiotherapy given for better results even for advanced ovarian lymphoma.