Anal gland adenoma associated with intestinal obstruction and rupture in Lontra longicaudis: case report
DOI:
https://doi.org/10.26605/medvet-v19n2-7338Keywords:
perianal neoplasm, peritonitis, mustellids, pathological diagnosisAbstract
Anal gland adenoma is a neoplasm of epithelial origin that mainly affects domestic dogs, but its occurrence in otters in Brazil is unknown. The objective was to describe a case of anal gland adenoma associated with intestinal obstruction and rupture in Lontra longicaudis. An elderly male otter specimen was necropsied after natural death without showing previous clinical signs. Necropsy findings included a firm mass measuring 15cm in diameter at the height of the perianal glands, distension and rupture of the rectum, accompanied by deposition of fibrillar material and free fluid in the cavity. Upon opening the rectum, there was a marked amount of fecal material composed of sharp fragments of fish skeletons. Microscopically, the mass corresponded to a benign proliferation of the anal glands, with ductal squamous metaplasia. Other organs did not present noteworthy alterations. Despite being benign, the neoplasm compressed a segment of the rectum, causing obstruction and subsequent disruption of an adjacent intestinal segment. Thus, anal gland adenoma should be considered as a differential diagnosis in otters, especially in those kept under human care.Downloads
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Copyright (c) 2025 Camila Soares Vasconcelos Rocha, José Rodrigo Pontes dos Santos , Jean Michel Barbosa Santos Duarte, Givaldo Bom da Silva Filho, Silvio Miguel Castillo Fonseca , Telma de Sousa Lima, Aquiles Vicente Pereira, Fábio de Souza Mendonça
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