LIPOSSARCOMA BEM DIFERENCIADO PRIMÁRIO DO FÍGADO DE UM CÃO

Abstract

Liposarcomas are rare tumors and have low incidence in the liver of animals. In Veterinary Medicine three types of liposarcoma were described: myxoid, pleomorphic and well differentiated. The objective of this work is to describe the clinical and histopathological findings of a well differentiated liposarcoma in a dog liver. A 6-year-old male mixed breed dog was attended at the Veterinary Hospital of the Federal University of Paraíba - CCA. In the anamnesis, it was reported that the animal was hit by a horse kick. On physical examination, the patient presented dehydration, cachexia, abdominal distension and jaundice. Abdominal ultrasonography showed abundant free fluid with multiple suspended echoes, making it difficult to see the organs. In the liver, two focal lesions were present. Mild anemia and leukocytosis were observed in hematologic evaluation. In the exploratory celiotomy, biliary-like fluid was seen throughout the abdominal cavity. The gallbladder was removed due to a rupture suspicion. A ruptured hepatic lobe was also removed. The gallbladder and hepatic lobe were referred for histopathological analysis revealing a well differentiated primary liposarcoma in the liver. No focal metastasis was identified. After surgery, the animal presented hematologic alterations and increased ALT and AF serum levels. It was found that well differentiated liposarcoma is morphologically similar in humans and dogs. Complete surgical resection was successful until one month after discharge. It is necessary to monitor the patient for a longer period.