Fatal systemic phaeohyphomycosis caused by Ochroconis gallopavum in a dog (Canis familaris)

K. Singh, J. Flood, R. D. Welsh, J. H. Wyckoff, T. A. Snider, D. A. Sutton

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

A 5-year-old Shetland Sheepdog was presented with a history of weakness, ataxia, anemia, thrombocytopenia, and occasional seizures. The dog had been treated for 6 months with prednisone for inflammatory bowel disease. A positive titer for Ehrlichia canis was detected 6 months before referral. The initial physical examination revealed a weak, laterally recumbent dog with pale mucous membranes. Neurologic examination revealed multiple neurologic deficits. A complete blood cell count (CBC) revealed normochromic, normocytic, nonregenerative anemia; lymphopenia; thrombocytopenia; and neutrophilic and monocytic leukocytosis. Urinalysis revealed proteinuria, with a specific gravity of 1.045. The dog was unresponsive to treatment and died. At necropsy, there was severe serofibrinous peritonitis and pleuritis, with randomly scattered dark brown necrotic foci present in multiple organs, including liver, spleen, kidney, and pancreatic lymph node. Histologically, there were extensive regions of parenchymal necrosis surrounded by neutrophils admixed with epithelioid macrophages, lymphocytes, and pigmented fungal organisms. Numerous brown, 2 to 6 μm in diameter, septate, branching hyphae, subsequently identified as Ochroconis gallopavum (formerly Dactylaria constricta var. gallopava), were observed.

Original languageEnglish (US)
Pages (from-to)988-992
Number of pages5
JournalVeterinary Pathology
Volume43
Issue number6
DOIs
StatePublished - Nov 27 2006

Keywords

  • Dematiaceous fungi
  • Dogs
  • Ochroconis gallopavum
  • Systemic phaeohyphomycosis

ASJC Scopus subject areas

  • veterinary(all)

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