ANDRADE, R. L. F. S.; http://lattes.cnpq.br/1725443518466811; ANDRADE, Rachel Livingstone Felizola Soares de.
Résumé:
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.