Struma Ovarii in a Post Menopausal Woman Presenting with Post Menopausal Bleeding

Abstract

Struma ovarii is a rare ovarian tumor characterized by the presence of mature thyroid tissue. Struma ovarii of the ovary constitutes about l % of all ovarian tumors. Approximately 15% of ovarian teratomas contain a smal 1, non-significant focus of thyroid tissue, and 0.8-3% are characterized by the presence of functional thyroid tissue or thyroid tissue occupying most of the mass, classified as struma ovarii [I]. Its most important complications, although rare, are malignant transformation and thyrotoxicosis. The symptoms of struma ovarii are similar to other ovarian tumors and are nonspecific in nature. It is difficult to diagnose on the basis of clinical manifestations or imaging studies as presenting clinical features are widely diverse. Pre-operative radiological imaging studies such as ultrasonography was able to diagnose struma ovarii in only 12% patients. We report a case of 56 yrs old postmenopausal female presenting with post menopausal bleeding with heaviness in lower abdomen, was diagnosed as having left ovarian mass. She underwent surgery. Histopathology was consistent with struma ovarii with negative peritoneal and omental biopsy. Post operative period was uneventful and patient is on regular follow up.