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Enlargement of a Humeral Osteochondroma After Skeletal MaturityA Case Report
Tang Liu, PhD, MD1; Xiangsheng Zhang, MD1; Qing Zhang, MD1; Dan Peng, MD1; Xiaoning Guo, PhD, MD1
1 Department of Orthopaedics, the 2nd Xiangya Hospital, Central South University, No. 139 Middle Renmin Road, Changsha, Hunan 410011, People's Republic of China. E-mail address for T. Liu: liutang1204@126.com. E-mail address for X. Zhang: xiangshengzhang@hotmail.com
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Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity.

Investigation performed at the 2nd Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China

Copyright © 2011 by The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2011 Mar 16;93(6):e20 1-4. doi: 10.2106/JBJS.J.00449
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Osteochondroma is the most common benign bone tumor1, and it usually occurs between the ages of ten and fifteen years1. Osteochondromas usually increase in size throughout childhood and then stop growing at skeletal maturity2. If there is growth or a change on the radiographs of an osteochondroma in an adult, malignant transformation to a chondrosarcoma is usually suspected3. We report the case of an adult with a solitary osteochondroma of the humerus that continued to grow to a very large size but did not show malignant changes on histological examination after excision. The patient was informed that data concerning the case would be submitted for publication, and he consented.
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