Clinical features and treatment outcomes of 14 cases of primary ovarian non-Hodgkin’s lymphoma: a single-center experience

To analyze the clinical characteristics, results of treatment, and prognostic factors of patients diagnosed as primary ovarian non-Hodgkin’s lymphoma (PONHL). Fourteen cases of PONHL treated in Fudan University Cancer Center during a 10-year period were retrospectively reviewed, and the clinical data of the patients were analyzed for correlation between KPS, clinical stage, tumor size, IPI, ovary involvement, treatment and prognosis. The median age was 45 years, and thirteen patients were diagnosed of diffuse large B-cell lymphoma and one patient lymphoblastic lymphoma. Four patients were stage IE, three stage IIE, and seven stage IVE. The median tumor size was 8 cm (range, 4.0–15.0 cm). The median overall survival (OS) of the 14 patients was 23.0 months (range 11.5–71.2 months). Thirty-six percentage of patients with bilateral ovary involvement had a shorter survival time than those with unilateral ovary involvement (median OS: 19.0 vs. 37.2 months, P = 0.014). The OS of Stage IVE was worse than stage IE and stage IIE (median OS: 18.75 vs. 37.5 months, P = 0.047). Patients with IPI >2 had worse prognosis than those with IPI ≤2 (median OS: 19.0 vs. 42.1 months, P = 0.03). PONHL patient with larger tumor mass had worse prognosis (median OS: 19.1 vs. 37.2 months, P = 0.019). R-CHOP regimens had a tendency to improve the OS but was not shown to be statistically significant (median OS: 22.4 vs. 37.2 months, P = 0.436). The management of PONHL should be based on multi-modality treatment including surgery and chemotherapy. The significant prognostic factors of survival are tumor size, Ann Arbor staging, and IPI.