Fibrossarcoma renal primário em cão: relato de caso

Abstract

The increased longevity of pets has led to an increase in age-related diseases, including cancer. This study addresses a primary renal neoplasm, highlighting that, although the kidneys are susceptible to secondary tumors, primary renal tumors are rare. Fibrosarcoma, a type of neoplasia generally observed in adult and elderly dogs and cats, often presents focally, that is, in specific and well-defined areas of the body, with a particularly high incidence in the head and limb regions. Although they do not always present obvious symptoms, when present, the signs can vary, such as lack of appetite, fever, fatigue, weight loss and pain in the lumbar region. A definitive diagnosis requires specialized tests, such as histopathology and immunohistochemistry, but many owners end up opting for euthanasia due to the high costs of treatments. The main treatment consists of surgical removal of the tumor, but the prognosis is usually unfavorable due to the malignant nature of the neoplasia and late diagnosis. The aim of this study is to report a clinical-surgical case of primary renal fibrosarcoma in a dog, with the aim of contributing to the improvement of the management of renal neoplasms and improving the quality of life of affected animals.