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- Title
Membranous ventricular septal aneurysm in a black-tailed prairie dog (Cynomys ludovicianus).
- Authors
Cooper, Timothy K.
- Abstract
Ventricular septal defects are one of the most common congenital cardiac malformations in animals, and most often affect the membranous portion of the septum. These defects may rarely close spontaneously. An adult male black-tailed prairie dog (Cynomys ludovicianus) had a smooth shiny botryoid red mass arising from the area of the septal cusp of the right atrioventricular (tricuspid) valve and membranous interventricular septum, and bulging into the right ventricular lumen. Histology and special staining demonstrated a membranous ventricular septal defect closed by the adherence of the septal cusp of the tricuspid valve to the muscular septum (so-called membranous ventricular septal aneurysm or aneurysm of the [peri]membranous ventricular septum). This is a rare finding in animals, and the histologic appearance has not been documented previously, to our knowledge.
- Subjects
CONGENITAL heart disease in animals; TRICUSPID valve; BLACK-tailed prairie dog; VENTRICULAR septal defects; LEFT ventricular hypertrophy
- Publication
Journal of Veterinary Diagnostic Investigation, 2017, Vol 29, Issue 4, p583
- ISSN
1040-6387
- Publication type
Article
- DOI
10.1177/1040638717710236