in the other parts of the body, such as the skin, rectum,and nasal or oral cavities. Metastasis of the TVT is uncommon, mainly occurring in immunocompromised dogs. It mayaffect organs such as the liver, spleen, kidney, lung, and musculature, and rarely, may be detected in the central nervoussystem. In this report, we describe the occurrence of a TVT causing spinal cord compression in a dog, and the results ofits treatment with hemilaminectomy and chemotherapy. A six-year-old male Dalmatian dog was referred to a veterinary teaching hospital with nonspecific abdominal pain.Laboratory examination showed no abnormalities; survey radiography revealed a moderate fecal retention. The dog receivedpainkillers and dietary guidelines. However, the patient was brought again to the veterinary teaching hospital nine dayslater with paraplegia, worse in the left limb than in the right, but with normal nociception. There was a cutaneous truncireflex cut-off at the T10 vertebra, also worse on left side than on right, along with spinal thoracolumbar hyperesthesia.During endotracheal intubation for general anesthesia for performing a cerebrospinal fluid tap and myelography, a smallmass was observed in the palatine tonsil, a sample of which was collected for cytological analysis. The cerebrospinal fluidexamination showed albuminocytologic dissociation, and myelography revealed an asymmetrical epidural compressionover the T8 vertebra. Surgery was performed with a lateral approach to the T8 vertebra, and a 3-cm epidural brown masswas found, which was completely excised and subjected to histopathological examination. The histopathological findingsof the mass excised from the spine revealed neoplastic proliferation of poorly differentiated, round tumor cells with large,round, central or peripheral nuclei, and slightly eosinophilic, occasionally vacuolar cytoplasm. The propagating cellsformed groups separated by a delicate fibrovascular stroma, consistent with the histopathology of TVT. Upon immunohistochemicalstaining, the neoplastic cells were found to be positive for MHC II, CD45RA, and lysozyme, but negativefor cytokeratin, CD3, CD20, and CD117. The cytological examination of the tonsillar mass confirmed TVT. The dog wastreated with vincristine, but after the third cycle the treatment was discontinued due to the choice of the owner. A yearafter the treatment, the dog presents only a mild spinal ataxia. Tumor cells can be transmitted through genital mucous membrane-contact at coitus. Hence, the TVT lesionsare often located on the external genitalia, but this was not observed in this case. Non-cutaneous metastases, which havean incidence of about 1%, can occur on the lips and tonsils, as was observed in the present case, or in the inguinal lymphnodes, liver, kidneys, mesentery, bones, eye, brain, and abdominal cavity. The pathological characteristics of TVT is quitevariable and depends on the host immune response; however, there was no evidence of immunosuppression or malnutritionin the present case. The patient might have acquired the neoplasia in the oral cavity probably from licking or sniffingthe preputial or vaginal discharges of an infected dog, and therefore, the primary tumor was probably the one in the tonsil,which later metastasized to the spine. This case presents an atypically located TVT, without genital occurrence, that wassuccessfully treated by surgery and chemotherapy. This report also indicates that TVT is also an important differentialdiagnosis of spinal neoplasia.