Mastocitomas cutaneo em felino domestico : relato de caso

Abstract

Mast cell tumor is described as the second most common skin tumor in cats, accounting for approximately 20% of cases of this neoplasm in the United States. However, in Brazil, the diagnosis of this tumor in this species is considered rare. This

study aimed to report and discuss a case of cutaneous mast cell tumor in a 12-year- old, 3.72-kg female feline treated at the UFPB Veterinary Hospital. Physical

examination revealed a soft, non-ulcerated, alopecic nodule measuring approximately 2 cm in the left abdominal region. The initial diagnosis, based on cytology, suggested high-grade mast cell tumor. However, after surgical excision, the material was sent for histopathology, resulting in a definitive diagnosis of low-grade cutaneous mast cell tumor. Some ultrasound findings, such as splenomegaly, hepatomegaly, and lymphadenopathy, raised clinical suspicion of metastases. However, no additional tests to confirm this hypothesis were requested. Although most mast cell tumors in felines have a benign course, given the lack of tumor staging in this patient, establishing a prognosis was uncertain. However, the animal appeared clinically well a few months after surgery. Based on this premise, this study presents a literature review that can help veterinarians understand the complexity and uniqueness of this neoplasm in felines and reinforces the need for further studies on the subject, contributing to a literature that still lacks insight into the diagnosis and prognosis of mast cell tumors in cats.