Table of Contents
Diagnostic and Therapeutic Endoscopy
Volume 2, Issue 1, Pages 53-56
Case Report

Lymphoepithelial Cyst of the Hypopharynx

1Department of Otolaryngology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan, 2-8-1, Minamiohtsuka, Toshima-ku, Tokyo 170, Japan
2Department of Otolaryngology, Keio University School of Medicine, Tokyo, Japan, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan
3Department of Otolaryngology, Juntendo University School of Medicine, Tokyo, Japan, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113, Japan

Received 15 April 1994; Accepted 1 March 1995

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A rare case of lymphoepithelial cyst formed in the piriform sinus of the hypopharynx is reported. Histopathological examination revealed a lymphoepithelial cyst. It was removed by laryngomicrosurgical technique using a side-opened direct laryngoscope. Because this cyst was wide-based on the antero-medial region in the right piriform sinus of the hypopharynx, the mucous membrane around the cyst was incised electrosurgically and then detached to facilitate removal. In this paper, we describe our surgical procedure for removing the cyst in this case and discuss the possible causes of the disease.