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AANEM Connect | True Neurogenic Thoracic Outlet Syndrome View modes: 
AANEM Communications - 2/25/2019 7:39:02 AM
   
True Neurogenic Thoracic Outlet Syndrome
I recently evaluated a 25 year old woman for a question of thoracic outlet syndrome, who was found to have a cervical rib on an X-ray. Her nerve conduction studies showed a median CMAP amplitude of 8 mV, ulnar CMAP amplitude of 7 mV, and normal median and ulnar SNAP amplitudes. However, her medial antebrachial sensory response was 7 uV but 18 uV on the other side. Is this consistent with true neurogenic TOS?


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