This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "In pancoast tumor, following is seen except- \nSelect and explain. \nA. Homer's syndrome, B. Rib erosion, C. Haemoptysis, D. Pain in shoulder and arm", 'role': 'user'}, {'content': "Answer: C \nExplanation: Haemoptysis is seen in central tumors or endobronchial growth (Pancoast tumor is a peripheral tumor)\nPancoast's tumor (also k/a superior sulcus tumor)\n\nIs a tumor of the apex of the lung\nIt may grow to cause\nshoulder and arm pain - d/t involvement of C8, T1 & T2 nerves\nErosion of ribs\nHomer's syndrome (Enopthalmos, Ptosis, Miosis & Ipsilateral loss of sweating)", 'role': 'assistant'}]