MATURE CYSTIC TERATOMAS OF THE OVARY WITH INTESTINAL WALL STRUCTURES HARBORING INTESTINAL-TYPE EPITHELIAL NEOPLASMS

Mature cystic teratomas of the ovary frequently contain intestinal-typ e tissues, but these rarely organize into complete intestinal walls, i ncluding all layers, and even more rarely develop secondary neoplasms. The present report documents two mature teratomas with formation of c omplete segments of intestinal wall, one also containing a benign muci nous cystadenoma of the appendiceal type and the other an intestinal-t ype adenocarcinoma infiltrating into the neoplastic bowel wall but not the surrounding ovarian parenchyma. The latter patient is alive and w ell 5 years after surgery. These cases expand the repertoire of second ary neoplasms, benign and malignant, developing in mature cystic terat omas. (C) 1995 Academic Press, Inc.