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Case Reports in Otolaryngology
Volume 2012, Article ID 298089, 3 pages
Case Report

Xanthogranuloma of the External Auditory Canal Mimicking a Benign Tumor: A Case Report

1Department of Otolaryngology, Ohtawara Red Cross Hospital, 2-7-3 Sumiyoshi-cho, Ohtawara City, Tochigi 324-8686, Japan
2Department of Oral Function and Molecular Biology, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama City, Fukushima 963-8611, Japan
3Department of Otolaryngology, Keio University, 35 Shinano-machi, Shinjuku, Tokyo 160-8582, Japan

Received 6 May 2012; Accepted 4 June 2012

Academic Editors: M. B. Naguib and N. Perez

Copyright © 2012 Keisuke Yoshihama 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.


Exostosis, osteoma, and adenoma are the most commonly encountered benign lesions in the external auditory canal. Herein, we report a case of the mass arising from the external auditory canal in a 24-year-old Japanese man. CT revealed the soft tissue mass without bony erosion, and MRI revealed that the mass showed a homogenous, iso signal intensity on a both T1- and T2-weighted image, suggesting that the mass is a benign tumor such as adenoma. Pathological examination showed that the specimen demonstrated xanthogranuloma in the external auditory canal. Although xanthogranuloma of the external auditory canal is extremely rare, otolaryngologists should recognize this condition during the inspection of the external auditory canal.