Pure dysgerminoma of the ovary 35 years on: a single institutional experience.

OBJECTIVE: The aim of this study was to evaluate clinicopathologic characteristics, long-term outcome and reproductive function in women diagnosed with pure dysgerminoma of the ovary.

METHODS: Sixty-five women with stage IA to IIIC pure ovarian dysgerminoma were identified and included in this retrospective study. Patients were treated at one institution between 1970 and 2005.

RESULTS: Median age at diagnosis was 22.2 years (range 8.2-64.1 years). 72.3% of patients presented with stage I, 4.6% stage II and 21.5% stage III disease (1.5% stage unknown). Initial management was surgical for all patients: unilateral oophorectomy in 47 patients (72.2%), bilateral oophorectomy +/- hysterectomy in 14 (21.5%) and cystectomy alone in 3 (4.6%). Seventeen patients received chemotherapy (15 adjuvant, 2 for residual disease), 20 received adjuvant radiotherapy and one patient received both. Recurrence occurred in 6 (9.2%) patients (5 stage IA, 1 stage IIA). All recurrences occurred within 19 months of primary diagnosis. All patients were successfully salvaged with radiotherapy (2 patients), chemotherapy (1 patient) or a combination of surgery and chemotherapy (3 patients). Overall, median follow up from time of recurrence was 22.5 years (range 9.3-31.4 years). Median follow-up of all patients was 10.5 years (range 1.1-31.9 years). Fifteen patients reported an attempt to conceive posttreatment resulting in 12 pregnancies and 12 live births in 8 women.

CONCLUSION: The long-term outcome of patients with pure ovarian dysgerminoma is excellent. Recurrences occur within 2 years of diagnosis and are treatable. Patients can be treated with fertility-sparing surgery and can expect good reproductive outcomes.