Abstract: Ovarian sclerosing stromal tumor (OSST) accounts for about 2%-6% of ovarian sex cord stromal tumors, which is rare in clinic. Although its histology is benign tumor, the clinical manifestations can be menstrual disorder, anemia and peritoneal effusion, which is easily misdiagnosed. In order to improve the understanding of OSST, we retrospectively analyzed the clinical data of one case of OSST and analyzed its clinical and pathological characteristics in combination with literature, in order to deepen clinicians′ understanding of OSST and improve the level of diagnosis and treatment, so as to avoid misdiagnosis and missed diagnosis.

Key words: Ovarian neoplasms, Sclerosing stromal tumor, Mesothelioma, Diagnosis, Therapy