Neoplasias de cães e gatos na Paraíba.

Abstract

Neoplasms in dogs and cats are a frequent cause of death in Paraíba. This dissertation is formed by two papers. In the first paper, send for publication to the Brazilian Journal of Veterinary Research reports the frequency of neoplasm 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. Tumors of the skin and anexa were the most frequently diagnosed (46.1%), followed by tumors of the mammary gland (24.4%), genital system (9.6%), and alimentary system (6.9%). 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. The second paper, accepted for publication on the veterinary Parasitology reports the association between Platynosomum fastosum infection and cholangiocarcinomas in cats. P. fastosum is a feline biliary tract trematode that generally causes asymptomatic infections. In the early 1980s in Brazil, P. fastosum was associated with cholangiocarcinomas, but this finding was not confirmed in the various publications on the parasite during the last 30 years. From 2000 to 2011, in the Veterinary Hospital of the Federal University of Campina Grande in northeast Brazil, 348 cats were necropsied, 11 of which (3.16%) were parasitized by P. fastosum. Three cases that resulted in death were associated with cholangiocarcinomas that were found to be associated with P. fastosum. Metastases were observed in two cases. The other 8 cats died from other causes, and the parasite was an incidental finding. 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.