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Nasal Polyp – An Incidental Paraganglioma

Nasal Polyp – An Incidental Paraganglioma Abstract The nose is an uncommon site for head and neck paraganglioma. The diagnosis is seldom established pre-operatively; its rarity, infrequent functionality and often benign biologic outcome underlie this fact. We present one such case in a 60-year-old man who presented with right nasal obstruction and episodic epistaxis. Rhinoscopy revealed a fleshy polypoid mass arising from the anterior cartilaginous nasal septum. Imaging studies excluded extra-nasal extension. The tumor was highly vascular showing numerous variable sized, mostly thin walled branching blood vessels akin to stag-horn shape simulating a vascular neoplasm. There were large areas of hyalinization. The typical tumor morphology was discernible only in focal areas. Immuno-histochemistry confirmed the diagnosis. The tumor cells expressed neuron specific enolase; S-100 stain demonstrated a vague zell-ballen pattern. Paraganglioma is a rare histologic diagnosis in nasal polypectomy specimen. We discuss the approach to exclude its morphologic mimics including vascular tumors. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Turkish Journal of Pathology de Gruyter

Nasal Polyp – An Incidental Paraganglioma

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Publisher
de Gruyter
Copyright
Copyright © 2016 by the
ISSN
1018-5615
eISSN
1309-5730
DOI
10.5146/tjpath.2014.01255
pmid
27562394
Publisher site
See Article on Publisher Site

Abstract

Abstract The nose is an uncommon site for head and neck paraganglioma. The diagnosis is seldom established pre-operatively; its rarity, infrequent functionality and often benign biologic outcome underlie this fact. We present one such case in a 60-year-old man who presented with right nasal obstruction and episodic epistaxis. Rhinoscopy revealed a fleshy polypoid mass arising from the anterior cartilaginous nasal septum. Imaging studies excluded extra-nasal extension. The tumor was highly vascular showing numerous variable sized, mostly thin walled branching blood vessels akin to stag-horn shape simulating a vascular neoplasm. There were large areas of hyalinization. The typical tumor morphology was discernible only in focal areas. Immuno-histochemistry confirmed the diagnosis. The tumor cells expressed neuron specific enolase; S-100 stain demonstrated a vague zell-ballen pattern. Paraganglioma is a rare histologic diagnosis in nasal polypectomy specimen. We discuss the approach to exclude its morphologic mimics including vascular tumors.

Journal

Turkish Journal of Pathology – de Gruyter

Published: Sep 1, 2016

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