Feline Phaeohyphomycotic Cerebellitis Caused by Cladosporium cladosporioides-complex: Case Report and Review of Literature
2019
Velázquez-Jiménez, Y. | Hernández-Castro, R. | Romero-Romero, L. | Salas-Garrido, C.G. | Martínez-Chavarría, L.C.
Cerebellar phaeohyphomycosis was diagnosed in an 8-year-old neutered male domestic cat. Gross lesions were limited to the cerebellum, which had a focally extensive dark brown–black, soft, irregular area affecting the cortex and white matter of the left hemisphere and extending to the reticular formation. Microscopically, multifocal pyogranulomatous meningoencephalitis with intralesional pigmented fungal hyphae effaced the cerebellar grey and white matter. Fungal hyphae were 3–6 μm in diameter, septate and non-dichotomously branched, with parallel, thin and slightly bulbous walls. Polymerase chain reaction for the internal transcribed spacer 1–2 ribosomal RNA genes was performed on tissue samples from formalin-fixed and paraffin wax-embedded sections of cerebellum. Nucleotide sequence analysis of the amplified fragment identified the fungal agent as Cladosporium cladosporioides. This is the first confirmed report of cerebellar phaeohyphomycosis attributable to C. cladosporioides-complex in a domestic cat.
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