Timoma em gatos : revisão de literatura e relato de caso

Abstract

Thymoma is among one of the most diagnosed neoplasms located in the cranial mediastinum in dogs and cats, originating from thymic epithelial cells, occurring with low frequency in dogs and rare in cats. This paper aims to conduct a literature review on thymoma in felines, evaluating epidemiological factors, clinical aspects, and therapeutic interventions involving thymoma, as well as complementary tests that assist in the correct diagnosis of the neoplasm. Additionally, a case report of a seven-year-old male cat of undefined breed, presenting with a mass in the cranial mediastinum for approximately two years, treated at the emergency department of the Veterinary Hospital of the Federal University of Mato Grosso (HOVETUFMT, by its Portuguese acronym), on the Cuiabá campus, is provided. Clinically, the cat presented with dyspnea, with marked respiratory difficulty and muffled lung auscultation. The definitive diagnosis of non-invasive thymoma was only possible post mortem, guided by macroscopic and microscopic alterations and with the aid of immunohistochemistry.