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Unusual Osteochondroma of the Medial Part of the Clavicle Causing Subclavian Vein Thrombosis and Brachial PlexopathyA Case Report
Anthony V. Mollano, MD1; Mark L. Hagy, MD1; Kevin B. Jones, MD1; Joseph A. Buckwalter, MD1
1 Department of Orthopaedics and Rehabilitation, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242. E-mail address for A.V. Mollano: anthony-mollano@uiowa.edu
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The authors did not receive grants or outside funding in support of their research or preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Investigation performed at the University of Iowa, Iowa City, Iowa

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2004 Dec 01;86(12):2747-2750
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Benign primary bone tumors, including osteochondromas, rarely occur in the clavicle. We report an atypical case in which an osteochondroma developed in the medial part of the clavicle and caused thoracic outlet syndrome with primary subclavian vein thrombosis (Paget-Schroetter syndrome), brachial plexus paresthesias, and mechanical sternoclavicular pain in an otherwise healthy young man. To our knowledge, we are the first to report a case of thoracic outlet syndrome that was caused by an osteochondroma of the medial part of the clavicle. The two other medial clavicular tumors that have been reported in the literature were asymptomatic1,2. We present the natural history of this lesion and report the outcome after local excision through a clavicular osteotomy followed by internal fixation. We also discuss clavicular embryology and speculate on the pathoanatomic origin of a medial clavicular osteochondroma. The patient and his family were informed that data concerning this case would be submitted for publication.
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