Neoplasias primárias diagnosticadas no encéfalo de cães no Sertão da Paraíba.

Abstract

Primary neoplasms diagnosed in the brains of dogs in the backwoods region of Paraíba. Neoplasias are among the main causes of death or euthanasia of dogs and cats. However, the involvement of the nervous system by neoplasms, whether primary or secondary, is uncommon. In these cases the clinical diagnosis is difficult, being important the knowledge of the epidemiology, clinical symptomatology and pathology. Thus, the objective of this study was to characterize the primary neoplasms diagnosed in the brains of dogs in the semiarid region of Paraíba. For this, all the necropsies records of dogs performed at the Animal Pathology Laboratory of the Veterinary Hospital of the Federal University of Campina Grande, during the period from January 2003 to December 2015, were reviewed.All cases of neoplasms in the central nervous system of dogs were identified and then selected only the primary neoplasms of the encephalon. During this period, 1.393 dog necropsies were performed, of which, 1,79% of the cases (25/1.393) were diagnosed with neoplasms involving the brain, being four of them of primary origin.Were diagnosed two meningiomas, one ependymoma, and one oligodendroglioma.These neoplasms were observed in three males and one female, ranging in age from 16 months to 15 years, being one Pitbull, one Poodle, one mixed breed and one without race information. The clinical manifestations varied according to the location of neoplasm. The main clinical signs reported were: blindness, seizure, behavioral alteration, vocalization, obnubilation and ataxia. The diagnosis was established according to the morphological characteristics and arrangement of the neoplastic cells.Despite the low occurrence, the knowledge of the primary brain neoplasms is important for the accurate diagnosis, besides helping in the differential diagnosis of other pathologies in patients with neurological dysfunctions. Furthermore, assists veterinary clinicians and veterinary pathologists of small animals, contributing to the study in the area of Veterinary Oncology.