Sclerosing stromal tumor: a rare ovarian neoplasm

Sclerosing stromal tumor (SST) is an extremely rare and distinctive sex cord stromal tumor, which occurs predominantly in the second and third decades of life. SSTs make up 2-6% of ovarian sex-cord stromal tumors. Due to the solid and distinct vascular structure of the tumor, it can be mistaken as a number of malignant ovarian tumors. As this specific neoplasm is very rare, it is not always possible to diagnose the tumor preoperatively with clinical and ultrasonographic findings. Furthermore, histopathological and immunohistochemical analysis does not always confirm the diagnosis. In this case report, clinical findings, histopathological features, and macroscopic appearance during laparoscopy of an SST are presented in a 20-year-old woman with pelvic pain. SST should be considered among the differential diagnosis of women with adnexal masses.