Extragenital mixed heterologous tumor of müllerian type arising in the cecal peritoneum

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Abstract
A mixed heterologous tumor of müllerian type arising in the cecal serosa of an elderly woman is reported. There was no history of endometriosis, and no evidence of the latter was found in the surgical specimen or at autopsy. Evidence of mesothelial origin was found microscopically in the adjacent cecal peritoneum. A review of medical literature on mixed heterologous tumors of müllerian type reveals that heretofore they have originated only in the genital system.