Peer-reviewed veterinary case report
Cat suddenly limping from widespread mycobacterium infection
By De Lorenzi, Giorgia et al.Ā·Published in Veterinaria italianaĀ·2020Ā·Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, ItalyĀ·View original on PubMed ā
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Original publication title: Acute lameness in a cat with disseminated mycobacteriosis.
- Species:
- cat
Plain-English summary
A cat was brought to the vet with sudden lameness in its right back leg, swollen lymph nodes, and skin lumps on its chest. Tests revealed an infection caused by Mycobacterium avium, which is known to affect cats with weakened immune systems. The cat had serious complications, including inflammation in various organs and bone infection. Unfortunately, the condition was severe, and the cat did not survive.
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Abstract
Mycobacterium avium infection was diagnosed in an adult cat showing acute lameness of the right hind limb, enlargement of the right popliteal lymph node and two cutaneous nodular lesions of the right chest wall. Conventional radiography of the proximal tibia showed a proliferative osteolytic lesion. Cytological examination of the right popliteal lymph node and the nodular skin lesions fine needle aspiration smears, demonstrated granulomatous inflammation with many negative staining bacilli within macrophages or in smears background. The diagnosis was confirmed by Ziehl‑Neelsen staining of the smears and the identification of mycobacteria was performed by microbiological and molecular methods. Histopathology performed after the necropsy revealed disseminated mycobacteriosis with granulomatous mesenteric lymphadenitis, granulomatous pneumonia, hepatitis and tibial osteomyelitis. M. avium is a well‑known agent of gastro‑enteric, respiratory or disseminated disease in immunocompromised cats but there are few cases reported in literature of bone involvement in systemic mycobacteriosis.
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Search related cases āOriginal publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/33543916/