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Fungal Phylum Microsporidia

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Saline Lavage for Sampling of the Canine Nasal Immune Microenvironment

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Invasive Microsporum canis causing rhinitis and stomatitis in a cat.

V Ziglioli¹, D L Panciera¹, T LeRoith²

¹Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24061, USA.

The Journal of Small Animal Practice

|April 11, 2016

Summary

A feline Microsporum canis infection caused invasive fungal rhinitis and stomatitis. Antifungal treatment with itraconazole and terbinafine successfully resolved this severe fungal infection in the cat.

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Area of Science:

Veterinary Mycology
Infectious Diseases
Feline Pathology

Background:

Microsporum canis is a common dermatophyte causing skin infections in cats.
Invasive fungal infections are less common but can be severe.
Fungal rhinitis and stomatitis present diagnostic challenges in veterinary medicine.

Observation:

A case of invasive fungal rhinitis caused by Microsporum canis is presented.
The infection extended from the nasal passages through the hard palate.
Secondary stomatitis was observed adjacent to the palatal lesion.

Findings:

Microsporum canis can cause deep tissue invasion beyond superficial dermatophytosis.
Invasive fungal rhinitis can lead to significant secondary oral pathology.
Successful treatment was achieved using a combination of itraconazole and terbinafine.

Implications:

This case highlights the potential for Microsporum canis to cause invasive disease in cats.
Early diagnosis and aggressive antifungal therapy are crucial for managing invasive fungal infections.
Veterinary practitioners should consider deep fungal infections in cats with persistent or severe upper respiratory and oral signs.