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': 'Posterior mediastinal tumours - \nSelect and explain. \nA. Neuroblastoma, B. Bronchogenic cyst, C. Neuroenteric cyst, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e. Neuroblastoma; 'b' i.e. Bronchogenic cyst; 'c' i.e. Neuroenteric cyst Masses/Lesions Location Neuroblastoma Posterior mediastinum Bronchogenic cyst Middle and post. mediastinum Neuroenteric cyst Middle and post mediastinum (Ref Schwaz, Grainger) Lymphoma All compaments No clue about Anterior thoracic meningioma", 'role': 'assistant'}]