Diffuse heterotopic hair in a canine uterus: case report

Abstract

RESUMOO presente relato descreve os achados clínicos e patológicos de uma heterotopia de pelos difusa associada com hiperplasia endometrial pseudo-placentacional em um útero de uma cadela. Macroscopicamente, o útero estava intensamente aumentado de volume e espesso, a superfície do endométrio estava irregular e recoberta com pelos pretos semelhantes aos pelos da cadela. Histologicamente, heterotopia de pelos associada com hiperplasia endometrial pseudoplacentacional foi observada.Palavras-chave: cão, pelo, heterotopia, útero ABSTRACTThe present report describes the clinical and pathological findings related to diffuse heterotopic hairs associated with pseudo-placentational endometrial hyperplasia in a canine uterus. Macroscopically, the uterus was intensely enlarged and thicker, and the endometrial surface was irregular and covered with black hairs similar to the hairs of the bitch. Histologically, heterotopic hairs associated with pseudoplacentational endometrial hyperplasia were observed.

Pseudo-Placentational Endometrial Hyperplasia in the Bitch: Case Series

“…Other papers reporting mild forms of PEH do not show the complete or incomplete tissue architecture but a lesion with a mild or moderate degree of spongy-like proliferations of the superficial epithelium of endometrium on a plus or minus separated and cystic glandular zone [ 2 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 20 , 21 , 23 , 24 ]. The superficial cells were columnar, often vacuolated and degenerated and very similar to decidual cells.…”

“…Chronic and acute endometritis may be concomitant to PEH [ 2 , 20 ], as observed in case D2. It is not known if PEH originates the inflammation or is simply invaded by a diffuse phlogistic reaction.…”

“…PEH seems a pure proliferative lesion, but an evident infiltration of immune cells may be detected [ 2 , 14 , 20 ]. As for CEH, an association of PEH and pyometra complex has been recently proposed and considered as an underestimated entity [ 21 ].…”