Respiratory Epithelial Adenomatoid Hamartoma of the Bilateral Olfactory Recesses: A Neoplastic Mimic?: Fig 1.

J.G Seol,J.Y Chen,L.A Loevner,B.W O'Malley,V.A Livolsi

doi:10.3174/ajnr.a1755

Abstract

REAH is a rare benign lesion of the sinonasal tract. The nasal cavity, particularly the posterior nasal septum, is the most common site of involvement. It usually occurs unilaterally and can be cured with conservative surgical resection. We present an unusual case of adenomatoid hamartoma involving bilateral olfactory recesses and discuss the importance of distinguishing this from other neoplastic processes that may lead to overly aggressive treatment.

Highlights

A hamartoma is a malformation of tissue that is indigenous to the involved anatomic site
REAH is a distinct and rare type of hamartoma occurring in the sinonasal tract
Including the initial 31 cases described by Wenig and Heffner,[1] there are currently approximately 50 REAH cases documented in the English literature

Summary

Introduction

ABBREVIATIONS: H&E ϭ hematoxylin-eosin; IP ϭ inverted papilloma; REAH ϭ respiratory epithelial adenomatoid hamartoma; SNAC ϭ sinonasal adenocarcinoma Intervening stroma resembled that of inflammatory sinonasal polyps (ie, loose connective tissue with edema), vascular congestion, and moderate numbers of chronic inflammatory cells.

Results

Conclusion