Inflammatory Polyps of the Nasal turbinates of cats: An argument for designation as feline mesenchymal nasal hamartoma

Author:

Greci Valentina1,Mortellaro Carlo M.1,Olivero Daniela2,Cocci Andrea1,Hawkins Eleanor C.3

Affiliation:

1. Dipartimento di Scienze Cliniche, Facoltà di Medicina Veterinaria, Università degli Studi di Milano, Italy

2. Laboratorio Analisi BiEsseA, Milano, Italy

3. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA

Abstract

Inflammatory polyps of the nasal turbinates (IPNT) in cats are benign growths that are histologically distinct from feline nasopharyngeal polyps. Most cats with IPNT are presented at less than 1 year of age with sneezing, noisy breathing and epistaxis, but without mucoid or mucopurulent nasal discharge. Histologically, IPNT are characterised by the presence of woven bone as part of the proliferating stroma and erythrocyte-filled spaces. These unique histological features are analogous to nasal hamartomas (NH) of children, specifically chondromesenchymal hamartoma (NCMH) and sinonasal fibro-osseous hamartoma (SFOH), which also result in signs of nasal obstruction, sneezing and epistaxis. In our study, clinical and histopathological features in five cats with IPNT were compared with published descriptions of NH in children. We conclude that the terminology ‘feline mesenchymal nasal hamartoma’ provides a more accurate description of the disease currently termed IPNT, and has the added advantage of being consistent with its human counterpart.

Publisher

SAGE Publications

Subject

Small Animals

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1. Differenzialdiagnose zur malignen Neoplasie: Nasopharyngeale Masse bei einer Katze mit nasaler Kryptokokkose in Deutschland;Tierärztliche Praxis Ausgabe K: Kleintiere / Heimtiere;2024-06

2. The Respiratory System;Veterinary Head and Neck Imaging;2022-03

3. Comparison of CT features of 79 cats with intranasal mass lesions;Journal of Feline Medicine and Surgery;2021-02-19

4. Ventral rhinotomy to remove a nasopharyngeal polyp that invaded the frontal sinus in a cat;Vlaams Diergeneeskundig Tijdschrift;2020-10-30

5. Upper Respiratory Tract of the Dog and Cat;Veterinary Cytology;2020-08-06

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