Papillary thyroid cancer found in struma ovarii: A case report

Abstract

Struma ovarii is composed of thyroid tissue originated from germ cells in a mature teratoma. Thyroid carcinoma found in struma ovarii is very rare. Primary thyroid carcinoma should be excluded. We present a 62-year-old female with papillary thyroid carcinoma in a mature teratoma as a incidentally found diagnosis. The patient underwent the surgery because of the endometrial carcinoma, while the histopathological examination found endometrial carcinoma as well as malignant struma ovarii. From the surgical point of view, it is very important to evaluate thyroid gland status in patients with malignant struma ovarii.