Abstract: The objective of this study was to report one case of the feline pseudomycetoma infected by Microsporum canis,from clinical symptom,diagnostic process to treatment strategies,which might strengthen awareness to the disease and provide potential insights for veterinary clinicians.Samples from the tail were taken for cytological examination,fungal culture and identification with MALDI-TOF MS.A large number of inflammatory cells,fungal spores and hyphae were observed in the cytology smear which indicated granulomatous inflammation.Based on the above results,fungal culture was performed.Staining and microscopic examination revealed more than six separated macroconidia in the cultured strains,which was finally identified as Microsporum canis by MALDI-TOF MS.In conclusion,the case was diagnosed as feline dermatophytic pseudomycetoma caused by Microsporum canis.Treatment for this case included shampoos and oral antifungal agents.In the early stage,the tail lesion was slightly improved and continued to deteriorate in the later stage.The patient died 7 months later with unknown reason.It suggested that veterinarians should pay attention when they encounter similar cases and use cytological examination,fungal culture and strain identification for diagnosis.Surgical removal in conjunction with medical therapy could improve the survival rate of the patient in the early stage of this disease.

Key words: feline; dermatophytic pseudomycetoma; diagnosis; treatment