This paper reports the frequency of tumors diagnosed in dogs and cats at the Veterinary Hospital of the Federal University of Campina Grande in Patos, northeastern Brazil, between 2003 and 2010. All necropsy and biopsy protocols from the Pathology Laboratory were revised and data related to the tumors were analyzed. In dogs, tumors of the skin and anexa were the most frequently diagnosed (46.7%), followed by tumors of the mammary gland (24%), genital system (10,3%), and alimentary system (6.5%). Malignant tumors (78%) were more frequent than bening tumors (22%) (p=0.001). In cats the frequency of skin and mammary gland tumors was the same (39.4%), followed by tumors of the digestive system (8.5%) and liver (5.7%). In cats, 95.8% of the tumors were malignant. Due to the diversity of the tumors observed in dogs and cats it is difficult for the practitioner to diagnose and treat tumors in these species. As a result, the systematic histologic diagnosis and the determination of the epidemiology of the tumors, in the different regions, are necessary to decrease tumor mortality.
Tumors; canine; feline; histophatology; oncology
