Clinical features and prognostic relevance of ovarian involvement in non-Hodgkin's lymphoma: A Consortium for Improving Survival of Lymphoma (CISL) report.

Fourteen patients had primary ovarian lymphoma, while eighteen patients had secondary ovarian involvement. There was no significant difference in survival rates between primary and secondary involvement with diffuse large B-cell lymphoma (DLBCL), the most common subtype. The 5-year overall survivals of primary and secondary involvement with DLBCL were 70.0% and 59.3%, respectively. The localized bilateral ovarian involvement showed poorer survival compared to stage III/IV patients with secondary ovarian involvement. Treatment outcomes of secondary ovarian involvement in non-Hodgkin's lymphoma were comparable to those of primary ovarian involvement, suggesting that ovarian involvement does not necessarily predict a worse prognosis for NHL patients.