Introduction: Subclavian artery aneurysm (SAA) can be an extremely rare complication of thoracic outlet syndrome (TOS). The arterial dilation usually occurs distal to the stenosis site causing TOS. We describe a rare case of a patient with neurological TOS with two voluminous SAA proximal and distal to interscalene triangle. Case report: A 55 years-old female patient, with no prior medical conditions, was refer...