Extract
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.