An uncommon case of <i>Microsporum canis</i> with deep ulcerated pyogranulomatous lesions in a Samoyed dog

Abstract A 5‐year‐old male Samoyed developed rapidly progressive pyogranulomatous nodular ulcerated lesions on the dorsal surfaces of all four paws 1 week after grooming. Cytology, histopathology and fungal culture were consistent with fungal infection, with deep follicular invasion. Itraconazole was started (10 mg/kg once a day orally) along with topical antifungal spray and powder, which achieved clinical resolution. This case highlights that although rare, kerion dermatophytosis can mimic sterile granulomatous disease or neoplasia, potentially leading to misdiagnosis. Awareness of this atypical presentation expands current understanding of breed‐related susceptibility and reinforces the importance of histopathology and fungal culture in establishing a definitive diagnosis.