Felis ISSN 2398-2950

Rhinosporidiosis

Contributor(s): Prof Susan Bunch, Susan Dawson

Introduction

  • Caused by Rhinosporidium seeberi  Rhinosporidium seeberi.
  • Polyps produced in nasal cavity leading to nasal discharge and sneezing.
  • This organism produces disease in domestic animals, humans and birds.
  • Disease only relatively recently reported in the cat.

Pathogenesis

Etiology

  • Infection with Rhinosporidium seeberi Rhinosporidium seeberi - an organism belonging to the class Mesomycetozoea (on the boundary between fungi and animals).

Specific

  • Infection is thought to be due to contact with contaminated water sources - mucosal damage of the nasal epithelium may predispose to infection.

Pathophysiology

  • In dogs and cats infection is limited to the nasal mucosa.
  • Infection of epithelial cells leads to the development of fibrous fibrovascular polyps with epithelial linings and sporangia present throughout the tissues.

Epidemiology

  • Direct spread between animals (and humans) is not thought to occur although animals can be infected from a common source.

Diagnosis

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Treatment

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Moisan P G & Baker S V (2001) Rhinosporidiosis in a Cat. J Vet Diagn Invest 13 (4), 352-354 PubMed.
  • Wallin L L, Coleman G D, Froeling J et al (2001) Rhinosporidiosis in a Domestic Cat. Medical Mycology 39 (1), 139-141 PubMed.


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