Deciduoid peritoneal mesothelioma in a dog

Veterinary Pathology
M MoriniP S Marcato

Abstract

Deciduoid mesothelioma is a rare variant of epithelial mesothelioma, up to now only described in human pathology, which bears remarkable cytomorphologic resemblance to the endometrium of pregnancy, termed decidua. A case of peritoneal mesothelioma with deciduoid features in a 10-year-old, female dog is reported. Multiple whitish-gray nodules (1-5 mm in diameter) in parietal peritoneum and mesentery were histologically composed of large, proliferating, polygonal or ovoid cells with an abundant eosinophilic, glassy cytoplasm. Immunohistochemical evaluation indicated that the neoplastic cells coexpressed cytokeratin and vimentin with strong and diffuse cytoplasmic staining, and ultrastructural analysis showed long and slender mesothelial-type microvilli; these findings confirmed the mesothelial origin of the tumor.

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Citations

Jun 19, 2014·Journal of the American Veterinary Medical Association·Brenda J StevensSamuel H Jennings
Apr 3, 2012·Gynécologie, obstétrique & fertilité·G CanlorbeJ-M Muray
Jun 15, 2013·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Daniel A FeeneyCarl R Jessen
Sep 9, 2008·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Arlen AvakianAndrew Rosenberg
Sep 13, 2011·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Sanjeev GumberDoo-Youn Cho
Sep 24, 2020·Veterinary Clinical Pathology·Brandy C KastlNora L Springer

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Methods Mentioned

BETA
transmission electron microscopy
electron microscopy

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