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  • Title: Co-occurrence of Nasal Polyps and Neoplasms of the Canine Nasal Cavity.
    Author: Tarrant JC, Holt DE, Durham AC.
    Journal: Vet Pathol; 2019 Nov; 56(6):885-888. PubMed ID: 31170873.
    Abstract:
    Nasal polyps in dogs are space-occupying soft-tissue masses that have been encountered concurrently with intranasal neoplasia in surgical biopsy specimens. The proportion of nasal polyp co-occurrence with primary nasal tumors was examined, and follow-up biopsies on dogs initially diagnosed with nasal polyp were reviewed. Histologic sections from 321 cases of intranasal neoplasia and 50 cases of nasal polyp from 2004 to 2017 were reviewed. Of the 321 cases of intranasal neoplasia, 51 (16%) had concurrent nasal polyps, and most of these (47/51) had intranasal carcinoma. Twenty-five of the 50 dogs with a primary diagnosis of nasal polyp were rebiopsied, and the diagnoses in these subsequent biopsies were nasal polyp in 15, malignant neoplasm in 9, and intranasal nematode in 1. Nasal polyps occurred frequently in conjunction with nasal carcinoma. In dogs with a diagnosis of nasal polyp, repeat biopsy to reveal possible neoplasia is warranted.
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