Sertoli-Leydig cell tumor of the ovary with heterologous elements and carcinoid: an immunohistochemical and ultrastructural study.

A Sertoli-Leydig cell tumor of the ovary is described in which there were heterologous elements consisting of enteric cysts and an evolving carcinoid. Endocrine cells in the cysts and carcinoid were found to contain gastrin and other polypeptide hormones. Aspects of the organization of the enteric epithelium, its histogenesis, and the possible relationship of this tumor to other cystic ovarian neoplasms are discussed.