Hérnia do forame caval em canino da raça Pug - Relato de caso

Abstract

Caval Foramen Hernia (CFH) is a rare pathology in small animals, often misdiagnosed through routine exams, such as chest radiography, requiring computed tomography in many cases. It may be asymptomatic, but some animals with nonspecific symptoms presented clinical resolution after herniorrhaphy. Knowing that the ectopic location of a hepatic lobe and consequent compression of the caudal vena cava (CVC) can cause Budd-Chiari-Like syndrome in small animals, the present work aimed to report the case of a Pug dog, male, 7 years old, admitted at the Veterinary Hospital of the Federal University of Uberlândia (HV-UFU) and diagnosed with CFH by chest computed tomography with initial suspicion of lung metastasis from mast cell tumor, after performing radiography for tumor staging. The radiographic findings were asymmetry in the diaphragmatic contour, and the presence of an elongated structure, with water radiopacity, in the topography of the accessory pulmonary lobe. In computed tomography it was possible to verify insinuation of the quadrate lobe and gallbladder through the caval foramen causing compression of the CVC, in approximately 50% of its diameter, concluding the diagnosis of CFH. The patient was asymptomatic and did not present alterations in hematological and biochemical tests, thus opting for clinical follow-up.