Struma ovarii in a 50 year old Ethiopian woman.

Struma ovarii represents the dominant growth of thyroid tissue in a teratoma. This exceedingly rare neoplasm is described in a 50 year-old Ethiopian woman who presented with right lower quadrant pain and mass of 10 years duration. The patient had nonspecific symptoms in addition to the above complaints. The diagnosis was disclosed by pathologic examination. This exceedingly rare neoplasm is discussed with clinicopathologic correlation and literature review.