Carcinoma en adenoma pleomórfico de glándula salival en un perro. Reporte de un caso

Abstract

Summary

Carcinoma in pleomorphic adenoma is a malignant mixed tumor that often stems from the parotid gland epithelial, consisting of benign substance, mioepithelium and mucoid, myxoid, cartilage or bone components; unlike humans where it occurs often this tumor is of rare occurrence in animals. This case report is intended to review the case of a canine, male golden retriever patient which was submitted to Centro de veterinaria y zootecnia at Universidad CES (Medellin, Colombia) for weight loss and poor appetite lasting for about five months or longer. The clinical examination revealed a mass in the cervical region of the skull. Relevant laboratory tests and complete radiographic study were performed that revealed a mass with ossification trabecules. A biopsy was performed to obtain a mass sample for histopathological evaluation. At ultrasound examination the commitment of the vascular structures or other important structures was evaluated and a final decision to perform surgery for removing the mass was done, also for histopathological study. The microscopic findings support the diagnosis of carcinoma in pleomorphic adenoma of the salivary gland. Initial recovery of the patient was at the veterinary hospital and was then successfully completed at home with no clinical complications, but a non-productive cough for several days possibly associated with the surgical manipulation. The patient evolved to improved weight gain and normal consumption of food with no clinical compromises.