This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
[{'content': 'All are been in Pancoast syndrome except \nSelect and explain. \nA. Brachial plexus involvement, B. Dyspnoea, C. Clubbing, D. Myasthenia gravis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Pancoast tumour invades brachial plexus,sympathetic chain,upper ribs,and veebrae.Dyspnoea can occur due to loss of functioning lung tissue/the development of a large pleural effusion.Clubbing and hyperophic pulmonary osteoahropathy can also occur. Bailey & Love's sho practise of surgery,25 th edition,page no:885", 'role': 'assistant'}]