Mastocitoma cutâneo em felino – relato de caso

The mast cell tumor is described as the second most common skin neoplasm in cats, but in Brazil we found few reports in this species. The aim of the study is to report a case of cutaneous mast cell tumor in an eight years, male, short hair Brazilian feline attended at the Dermatology Service of the Veterinary Hospital of the University Federal Rural of Rio de Janeiro that had a single nodule, erythematosus, alopecic and ulcerated in the left supraorbital region. Cytological examination revealed the presence of a lot of well-differentiated neoplastic mast cells. The animal was taken to the surgical removal of the nodule. Histopathological examination confirmed the diagnosis of mast cell tumor. It is concluded that cytology is an important tool for the diagnosis of this neoplasm in cats and that surgery is the preferred therapy.