Mixed ovarian tumor composed of brenner and thyroid elements

Abstract
An exceedingly rare [human] ovarian neoplasm composed of mixed thyroid and Brenner tumor is reported. Review of the literature yielded only 1 well documented case previously described. Although the possibility of a collision of 2 tummors cannot be completely discarded, a possibility of an endodermal teratoma (thyroid-urothelium) is also proposed.