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Feline cryptococcosis is caused by a systemic fungus of the genus Cryptococcus, after inhalation of yeasts which grow in bird droppings and fallen vegetation on the ground. Clinical signs can range from localized to systemic lesions, which can appear in isolation or combined, causing respiratory, neurological, ocular and cutaneous syndromes. The most common forms are of the cutaneous and upper respiratory tract, consisting of sneezing, runny nose, nasal discharge, nodules and swelling in the nasal plane. Diagnosis can be made through cytological examination or fungal culture. The treatment of choice is given by the use of antifungals, especially itraconazole, widely used due to its high efficacy when there is no involvement of the Central Nervous System (CNS). Treatment extends to 1 month after the healing of the infection due to the high rate of recurrence.
Gnoatto et al. (Sat,) studied this question.