Tecido Endometrial Ectópico: Revisão de Literatura e Relato de Caso

Abstract

Endometrial ectopic tissue are commonly reported in women and animals, but there are different macro and microscopic presentations. Two main types have been described: adenomyosis, often described in dogs and cows and rarely in women; and endometriosis, observed in women and in nonhuman primates. The endometrioma is a less frequent presentation of endometriosis, has been reported only in women. The aim of this work is to report a rare case of endometrioma in a 11-years old German Shepherd bitch who presented dehydration, anemia and prostration. At necropsy besides ascites and generalized pallor, adjacent to the left ovary and uterus was a well-defined reddish mass, with 25.0 x 20.0 x 20 cm . Microscopically, the epithelium had similar to the characteristics to the normal endometrium. The epithelial cells showed expression of cytokeratin and casual expression of vimentin. The epithelial cells also showed expression of beta estradiol receptor. Based on the macroscopic, microscopic and immunohistochemical findings, the diagnosis of endometrioma was signed.