Spontaneous squamous cell carcinoma of the tongue and multiple bronchioloalveolar carcinomas in a virginia opossum (Didelphis virginiana)

D. Y. Kim, M. A. Mitchell, M. De las Heras, H. W. Taylor, D. Y. Cho

Research output: Contribution to journalArticlepeer-review

Abstract

Two primary tumours, squamous cell carcinoma of the tongue and multiple bronchioloalveolar carcinomas, were diagnosed in a Virginia opossum (Didelphis virginiana). Two oral masses were located in the right ventrolateral surface of the tongue, near the frenulum, and the lungs contained multiple, widely distributed, nodular masses. Microscopically, the oral masses were composed of invasive cords of pleomorphic, polyhedral cells, typical of squamous cells. The multiple pulmonary masses consisted of non-ciliated, cuboidal, columnar, or occasionally polyhedral cells arranged in an alveolar pattern with multifocal areas of necrosis. This is the first report of spontaneous oropharyngeal squamous cell carcinoma in the Virginia opossum. However, multiple pulmonary adenomas have been reported previously in this species, the lesions being similar to those in sheep pulmonary adenomatosis (jaagsiekte). In the present study, immunohistochemical examination of the pulmonary tumours with a rabbit polyclonal antiserum to jaagsiekte retroviral capsid protein proved negative.

Original languageEnglish (US)
Pages (from-to)226-230
Number of pages5
JournalJournal of Comparative Pathology
Volume126
Issue number2-3
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • veterinary(all)

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