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Unusual presentation of canine Mycobacterium avium infection
  1. Emily Sharp1,
  2. Samantha Taylor1 and
  3. Conor O’Halloran2,3
  1. 1 Lumbry Park Veterinary Specialists, Alton, UK
  2. 2 Royal Dick School of Veterinary Studies, University of Edinburgh, Easter Bush, UK
  3. 3 Roslin Institute, University of Edinburgh, Roslin, UK
  1. E-mail for correspondence; e.sharp202{at}


This short communication describes the clinical and morphological findings, diagnosis and treatment of a case of Mycobacterium avium infection in a golden retriever that presented with a progressive nasal swelling and lymphadenopathy. Although well documented in cats, where cutaneous lesions are frequently recognised, canine M avium infection is less commonly reported, and cutaneous lesions are rare. To the authors’ knowledge this is the first documented case of canine M avium infection that presented with a cutaneous lesion but no systemic clinical signs. It occurred in a dog with no previously reported breed predisposition and highlights that in cases of cutaneous histiocytic infiltrate in dogs mycobacterial infection should remain a differential diagnosis, even in the absence of suggestive organisms on histopathological examination.

  • mycobacteria
  • mycobacterium avium
  • internal medicine
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  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests CO’H is in receipt of a grant from Biotechnology and Biological Sciences Research Council.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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