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: ENT
[{'content': 'Vocal cord palsy is not associated with: \nSelect and explain. \nA. Veebral secondaries, B. Left atrial enlargement, C. Bronchogenic carcinoma, D. Secondaries in mediastinum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Vocal cord paralysis is most commonly iatrogenic in origin following surgery to Thyroid, parathyroid, carotid or cardiothoracic structures. Neck trauma Benign or malignant thyroid disease Thyroid surgery Carcinoma cervical oesophagus Cervical lymphadenopathy', 'role': 'assistant'}]