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Systemic Mycobacterium smegmatis infection in a dog
A M Grooters1, C G Couto, J M Andrews
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus 43210-1089.
Journal of the American Veterinary Medical Association
|January 15, 1995
Summary
A Basset Hound presented with fever and lameness due to Mycobacterium smegmatis infection. This rare mycobacterial infection caused widespread lymphadenopathy and granulomatous inflammation, leading to euthanasia.
Area of Science:
- Veterinary Medicine
- Infectious Diseases
- Canine Pathology
Background:
- Mycobacterial infections in dogs are uncommon but can cause significant pathology.
- Clinical signs can be non-specific, making diagnosis challenging.
Observation:
- A 3-year-old Basset Hound exhibited chronic fever and lameness.
- Abdominal imaging revealed a mass consistent with lymphadenopathy.
- Fine-needle aspirates showed macrophages with acid-fast bacilli.
Findings:
- Histopathology confirmed chronic granulomatous hepatitis and lymphadenitis.
- Bacteriologic culture identified Mycobacterium smegmatis.
- The dog was euthanatized due to the poor prognosis.
Implications:
- This case highlights Mycobacterium smegmatis as a potential cause of severe systemic disease in dogs.
- Early diagnosis and treatment are crucial for managing mycobacterial infections in canines.
- Further research into canine mycobacterial diseases is warranted.