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Case Reports in Medicine
Volume 2012, Article ID 121743, 4 pages
http://dx.doi.org/10.1155/2012/121743
Case Report

Extraskeletal Chondroma of the Preauricular Region: A Case Report and Literature Review

Department of Otolaryngology, Head and Neck Surgery, Steel Memorial Hirohata Hospital, 3-chome, Yumesaki-cho, Hirohata-ku, Himeji 671-1122, Japan

Received 23 April 2012; Accepted 20 May 2012

Academic Editor: Michail Varras

Copyright © 2012 Futoshi Watanabe 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.

Abstract

An extraskeletal chondroma is a rare benign cartilaginous tumor that develops in soft tissue. Histologically, it is a lobulated nodule surrounded by a fibrous capsule; the inside consists of mature hyaline cartilage containing a few normal chondrocytes. We present a rare case of extraskeletal chondroma in the preauricular region. A 43-year-old man presented with a 2-cm-diameter right preauricular tumor that had been developing for 1 year. Magnetic resonance imaging showed a solid lobulated tumor in the right preauricular region, which was proximate to the capsule of the right temporomandibular joint (TMJ). This was subsequently resected under general anesthesia. The tumor was not in contact with the TMJ capsule and had not invaded the surrounding tissue, facilitating en bloc excision. Histopathologically, the tumor comprised mainly of hyaline cartilage containing chondrocytes with chondrocytic lacunae and was diagnosed as a chondroma. The postoperative period was uneventful, and there was no evidence of recurrence at the 2-year followup. We describe the clinical characteristics of our case and review the literature, emphasizing the differential diagnosis.