Pulmonary carcinoma metastasis in a feline digit
Kirsch, FrancineBraun, AdrianaSallis, Eliza Simone ViégasZamboni, RosimeriBrambatti, GustavoGiordani, ClaudiaFrança, Raqueli Teresinha
Background: Primary pulmonary neoplasia is rare in domestic cats, with fewer than 1% of all tumors diagnosed in thisspecies. Primary lung tumors have a high percentage of metastases, observed in up to 75% of cases in cats. The lung-digitsyndrome is characterized by primary pulmonary neoplasms with metastases to the extremities of the limbs, mainly distalphalanges, possibly involving several digits and more than one limb. This report describes a case of pulmonary carcinomametastasis in a cat digit.Case: A 16-year-old neutered female cat was showing increased volume of the fourth digit was examined at the Universityof Caxias do Sul veterinary clinic. The animal also showed signs of progressive weight loss, apathy and limping on theright thoracic limb. After clinical evaluation, the animal was sent for radiographic examination of the right metacarpal/phalangeal region and the thorax. A radiopaque structure was observed with discreet central regions of radiolucency,measuring approximately 3 cm in height, 3.4 cm in length and 2.4 cm in depth in the left caudal lung, suggesting neoplasiaor pulmonary abscess. Digit image revealed osteolysis of the right and middle distal phalanx measuring 2 cm in height, 3cm in breadth and 1 cm in length. In view of these radiographic changes, we performed fine needle aspiration cytology ofthe digit and a nodule in the region of the skeletal musculature of the right thoracic limb. Cytological evaluation revealedcells had cilia on their surface (compatible with respiratory epithelium). The cytologic findings of the fine-needle biopsywere suggestive of carcinoma. After stabilization, the digit was amputated. The material was sent to the laboratory of theFederal University of Pelotas for histopathological examination...(AU)
Texto completo