2003, Number 1
Clinico-pathological study of six dogs with nasal carcinoma and adenocarcinoma: Diagnosis and treatment
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ABSTRACTThe incidence of nasal tumors in dogs is relatively rare but represents an important challenge to the veterinary clinician. The three main anatomical sites are the vestibulum, ethmoid turbinates and paranasal sinuses; these tumors are found primarily in long-nose breeds. The average age for the onset of canine nasal tumors is seven years. A slightly higher prevalence in male dogs has been reported in the literature. The clinical signs typically associated with nasal tumors are sneezing, nasal discharge, epistaxis, exophthalmia, facial swelling, nasolacrimal duct obstruction and, sometimes, neurological disturbances. These signs are non-specific since they mimic bacterial or mycotic rhinitis, sinusitis, dental diseases, nasal trauma or foreign bodies lodged in the upper respiratory tract. Definitive diagnosis of nasal tumors is achieved by cytology or histopathology. However, the final diagnosis is generally reached at a time when the tumor is already in an advanced stage, and has invaded adjacent nasal structures or more distant organs, such as the brain. The prognosis is generally poor as most nasal tumors are malignant with survival rates depending primarily on the tumor type, biological behavior and clinical stage. Radiotherapy and chemotherapy can prolong survival rates and improve the quality of life of dogs. Without treatment, the survival following diagnosis of nasal tumors is usually only a few months. In this study, six clinico-pathological cases of canine nasal neoplasia are presented.
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