DOI: 10.36347/sjmcr.2016.v04i04.019

Pages: 246-248

Struma ovarii or monodermal teratoma is a highly specialized ovarian neoplasm composed of thyroid tissue in more than 50% of the tumor. Struma ovarii accounts for 1% of all solid ovarian tumors and 1-4% of benign ovarian teratomas. The contralateral ovary may contain another teratoma, but the struma is rarely bilateral. Bilaterality is reported to be present in 6% of all cases. Here we report a case of 45 year perimenopausal female who presented with abdominal pain and progressive abdominal distension. The USG abdomen revealed ascites with large heterogenous cystic mass arising from left adnexa. Her serum CA-125 level was found to be 1130 IU/ml. These findings were suspicious for an ovarian malignancy. After surgery the diagnosis of non-functional, bilateral benign struma ovarii was made. The combination of Struma ovarii and elevated CA-125 has been reported infrequently. This is a rare case of bilateral benign struma ovarii with ascites and elevated CA-125 level.