Journal of Veterinary Science

The Korean Society of Veterinary Science (대한수의학회)
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Muscular and collagenous cerebellar choristoma in a dog

  • Ripplinger, Angel (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • de Melo, Stella Maris Pereira (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Ferrarin, Denis Antonio (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Schwab, Marcelo Luis (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Wrzesinski, Mathias Reginatto (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Rauber, Julia da Silva (Programa de Pos Graduacao em Medicina Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Flores, Mariana Martins (Departamento de Morfologia, Laboratorio de Patologia Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Kommers, Glaucia Denise (Departamento de Morfologia, Laboratorio de Patologia Veterinaria, Universidade Federal de Santa Maria (UFSM)) ;
  • Mazzanti, Alexandre (Departamento de Clinica de Pequenos Animais, Universidade Federal de Santa Maria (UFSM))
  • Received : 2021.08.12
  • Accepted : 2022.01.03
  • Published : 2022.03.31
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Abstract

This report aims to describe the first case of muscular and collagenous choristoma in a dog. A 10-yr-old female mixed-breed dog presented with lateral recumbence, vocalization, positional vertical nystagmus, divergent strabismus, anisocoria, and status epilepticus. The clinical condition evolved to stupor and ultimately, death. Necropsy revealed a white mass causing an irregular increase in the volume of the cerebellar vermis. In histological analysis, a well circumscribed, unencapsulated mass was observed in the cerebellum, consisting of fibers of striated skeletal muscle and collagen fibers, mostly mineralized. Based on the histopathological and histochemical findings, a diagnosis of muscular and collagenous cerebellar choristoma was made.

Keywords

Acknowledgement

The Coordenacao de Aperfeicoamento de Pessoal Docente, Brazil (CAPES) and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Brazil (CNPq) by fellow ship and research grant.

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