Abstract
Sclerosing stromal tumor (SST) is a rare benign neoplasm of the ovary. There are only a few cases of sclerosing stromal tumor of the ovary during pregnancy that have been reported in the literature. The presenting symptoms are nonspecific, including pelvic pain or menstrual irregularities. We describe a case of a young 22-year-old pregnant woman who presented with pelvic pain in the second trimester. On imaging she was found to have a 12 cm left adnexal mass with solid features on MRI. The patient underwent exploratory laparotomy and removal of the mass that was attached to the left ovary via a stalk with preservation of the left ovary. The frozen section diagnosis was “sex cord stromal tumor, favor benign”. The final pathology confirmed the diagnosis of the sclerosing stromal tumor of the ovary where characteristic features of SST including a heterogenous, pseudolobular growth pattern with hypercellular and hypocellular areas were identified along with prominent luteinized stromal cells attributed to pregnancy. In this case report and review of literature, we emphasize consideration of this rare ovarian tumor in the differential diagnosis for a young pregnant woman who presents with pelvic pain.
Highlights
Sclerosing stromal tumor (SST) of the ovary is a benign neoplasm that was rst reported in 1973 by Chalvardjan and Scully [1]. e occurrence is very rare, reported to account for about 6% of sex-cord stromal ovarian tumor subtypes [2, 3]
Sex cord stromal tumors (SST) of the ovaries are rare ovarian neoplasms accounting for approximately 5–8% of ovarian tumors. ey originate from sex cords and the ovarian stroma or mesenchyme. is group of ovarian tumors includes granulosa cell tumors, broma, thecoma, steroid cell tumors, Sertoli–Leydig cells tumors, sclerosing stromal tumors, and other morphologically indi erent cells [8,9,10,11]
Sclerosing stromal tumors comprise of approximately 6% of sex cord stromal tumors, and were rst described in 1973 by Chalvardijan and Scully [1, 9, 10, 12]. ese tumors are benign and rare, and their unique features can be distinguished from other stromal tumors by pathology and radiology [2]
Summary
Sclerosing stromal tumor (SST) of the ovary is a benign neoplasm that was rst reported in 1973 by Chalvardjan and Scully [1]. e occurrence is very rare, reported to account for about 6% of sex-cord stromal ovarian tumor subtypes [2, 3]. E occurrence is very rare, reported to account for about 6% of sex-cord stromal ovarian tumor subtypes [2, 3]. It usually occurs in women in the second or third decades of life, with 70% of the cases being reported to occur between 14 and 29 [4]. Sclerosing Stromal tumors are hormonally inactive [5]. Rare hormonal activity has been reported in the literature [6] Ozdemir et al reported a total of 208 cases of sclerosing stromal tumor from 2003 to 2014 with only 15 reported cases during pregnancy [7]
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