Abstract
Cryptococcosis is a non-contagious systemic mycosis caused by yeasts of the Cryptococcus genus, which can affect humans, domestic and wild animals. Transmission occurs through the inhalation of these airborne yeasts from contaminated environments. In domestic cats, it stands out for infection of the upper respiratory tract, of the cutaneous system, which can reach the central nervous system and still present itself in a disseminated form. Treatment is carried out through the use of antifungals such as fluconazole, itraconazole and amphotericin B for long periods. This article rehearses a case of cryptococcosis in a 10-year-old mixed breed feline with free access to the street. The animal has an ulcerative lesion in the nasal plane, nasal discharge, depression and anorexia. The diagnosis was identified through microbiological culture. Link the severity of the patient's condition to a conduct adopted for euthanasia. Early diagnosis is essential for the establishment of adequate treatment and a favorable prognosis since cryptococcosis, although rare, can be potentially fatal.