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Case Reports in Otolaryngology
Volume 2012 (2012), Article ID 215847, 3 pages
Case Report

Bilateral Endoscopic Medial Maxillectomy for Bilateral Inverted Papilloma

Department of Otolaryngology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hazama-Machi, Yufu, Oita 879-5593, Japan

Received 21 March 2012; Accepted 11 June 2012

Academic Editors: S. L. Goudy, V. A. Resto, and S. Ulualp

Copyright © 2012 Satoru Kodama et al. 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.


Inverted papilloma (IP) is a benign tumor of the nasal cavity and paranasal sinuses that is unilateral in most cases. Bilateral IP, involving both sides of the nasal cavity and sinuses, is extremely rare. This paper describes a large IP that filled in both sides of the nasal cavity and sinuses, mimicking association with malignancy. The tumor was successfully treated by bilateral endoscopic medial maxillectomy (EMM). The patient is without evidence of the disease 24 months after surgery. If preoperative diagnosis does not confirm the association with malignancy in IP, endoscopic sinus surgery (ESS) should be selected, and ESS, including EMM, is a good first choice of the treatment for IP.