<prompt> True about thoracic outlet syndrome are the below EXCEPTAdsons test is used for diagnosisIt may be caused by cervical ribPain, numbness and paranesthesia in the involved extremity occurUpper trunks of the brachial plexus are commonly affected  <response>: Ans. d Upper trunk of brachial plexus are commonly affectedRef: Short Cases in Surgery by RRM In Thoracic outlet syndrome - Lower trunk C8, T1 Ulnar nerve is compressed Subclavian artery is compressed - detected by Adsons test 