卵巢硬化性间质瘤(sclerosing stromal tumour of the ovarian,SST)属卵巢性索间质肿瘤的亚型,约占卵巢肿瘤的3%~6%,因其无特殊的临床特征及影像学表现而容易被误诊。本文报道1例SST患者,探讨其发病机理及诊疗进展,以期提高术前诊断率,减少过度治疗,达到最好的预后。1病例简介患者女,25岁,因“不规则阴道流血10月余”于2016年6月6日入院,近10月来月经不规律,经期4~15天,周期15~30天, Ovarian sclerosing stromal tumor of the ovarian (SST) is a subtype of ovarian sex cord tumors, accounting for about 3% to 6% of ovarian tumors, because of its special clinical features and imaging findings Easily misdiagnosed. This article reports a case of SST patients, explore the pathogenesis and treatment progress, with a view to improve the preoperative diagnosis, reduce over-treatment, to achieve the best prognosis. 1 case description Female patient, 25 years old, because of “irregular vaginal bleeding more than 10 months” on June 6, 2016 admission, irregular menstruation in recent 10 months, menstrual 4 to 15 days, the cycle of 15 to 30 days,