This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Aerial disorders, Subject name: Surgery
[{'content': 'Commonest symptom associated with thoracic outlet syndrome is:- \nSelect and explain. \nA. Intermittent claudication, B. Pain in radial distribution, C. Pain in ulnar distribution, D. Gangrene', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clinical Features In > 90% of cases, neurogenic manifestations are repoed. Ulnar nerve (C8-T1) involvement is most common Motor weakness and atrophy of the hypothenar and interosseous muscles Pain and paresthesia along the medial aspect of the arm, hand, 5th finger and medial aspect of 4th finger.', 'role': 'assistant'}]