The aim of this article was to describe cases of nasal tumors in dogs in which a rhinoscopy procedure was used as part of the process of disease diagnosis. The study included two dogs, aged 8 and 11 years, showing symptoms of epistaxis. The animals underwent a radiological examination and a rhinoscopy, during which bioptats were taken for histopathological examination. The radiological examination of the head did not reveal lesions characteristic of a neoplastic process. The rhinoscopic examinations showed a large hyperplasia closing the nasal canal in both dogs. The histopathological examination of the two bioptats sampled from the nose area demonstrated clusters of cells characteristic of a neoplastic process. The dogs were euthanized and subjected to a post-mortem examination. The histopathological examination of samples taken from the lesions in the nasal cavity confirmed olfactory neuroblastoma and transitional cell carcinoma in dogs 1 and 2, respectively. Rhinoscopy is a technique complementary to computer tomography, and, if the latter is impossible, it should represent, along with a radiological examination, the basis for a preliminary diagnosis of a neoplastic process, which ought to be confirmed by a cytological or histopathological examination of bioptats obtained from the sites of the lesions.
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