thoracic outlet syndrome

Medical Dictionary

thoracic outlet syndrome n.
Compression of the brachial plexus and subclavian artery by attached muscles in the region of the first rib and the clavicle, characterized by pain in the arm, numbness in the fingers, and weakness in the hand muscles.

The American Heritage® Stedman's Medical Dictionary
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WordNet
thoracic outlet syndrome

noun
tingling sensations in the fingers; caused by compression on a nerve supplying the arm 
WordNet® 3.0, © 2006 by Princeton University.
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