RESUMO
Introduction: Granulosa cell tumors (GCTs) are part of the sex cord-stromal tumors occurring with a rare incidence rate that only makes up about 2-5% of all ovarian malignancies. Case Presentation: A 28-year-old woman, gravida 2, para 1, presented with a juvenile-type granulosa cell tumor at 31 weeks gestation, which appeared as a rapidly growing mass with rupture. She under-went an exploratory laparotomy with unilateral salpingo-oophorectomy, and consequently had a successful vaginal delivery. Post-operatively she was treated with paclitaxel and carboplatin chemotherapy regimen with no evidence of recurrence after one year. Conclusion: Radical surgical management is recommended for these tumors due to the high recurrence rate, but more conservative surgical options may be considered based on the fertility goals of the patient.