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Bilateral perirenal fat necrosis in a sambar deer (Rusa unicolor)

Authors :
Ana C.M.R. Bernardo
Telma S. Lima
Silvio M.C. Fonseca
Givaldo B. Silva-Filho
Hisadora A.S.C. Bom
Elizandra T. Melo
João P.G. Silva
Fábio S. Mendonça
Source :
Pesquisa Veterinária Brasileira, Vol 43 (2023)
Publication Year :
2023
Publisher :
Colégio Brasileiro de Patologia Animal (CBPA), 2023.

Abstract

ABSTRACT: The gross and histopathological findings of perirenal fat necrosis in a sambar deer (Rusa unicolor) are described in a 6-year-old female deer that was necropsied after showing severe apathy, weight loss, recumbency, and death. At post-mortem examination, two large white to yellow, irregular, and encapsulated masses involving both kidneys were observed. Microscopically, these masses consisted of fat tissue presenting multifocal to coalescing areas of necrosis, diffuse infiltration of lymphocytes, macrophages, occasional plasma cells, and multinucleated giant cells. Multifocally, the necrotic sites were replaced by mineralization and fibrosis. The described condition has not been reported in deer and the exact mechanisms of development of perirenal fat necrosis remain to be determined. Massive fat necrosis has been reported in other animal species such as dogs, cats, pigs, goats, cattle, and whales (Balaena mysticetus). It is usually an incidental finding during post-mortem examination that needs to be differentiated from neoplasms originating from the adipose tissue, kidneys and adrenals, and disorders resulting from pancreatitis and obesity.

Details

Language :
English, Portuguese
ISSN :
16785150
Volume :
43
Database :
Directory of Open Access Journals
Journal :
Pesquisa Veterinária Brasileira
Publication Type :
Academic Journal
Accession number :
edsdoj.bf7780f74cc54bf7b7b9af26ea6f9fad
Document Type :
article
Full Text :
https://doi.org/10.1590/1678-5150-pvb-7254