This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax And Mediastinum, Subject name: Surgery
[{'content': 'Middle mediastinal masses include all the following except: \nSelect and explain. \nA. Bronchogenic cyst, B. Ascending aoic aneurysm, C. Pericardial cyst, D. Ganglioneuroma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Middle Mediastinum Cysts (MC in middle mediastinum): - Pericardial (MC) - Bronchogenic - Entergenous - Neuroenteric Vascular masses (aneurysm) LN enlargement and lymphoma Mesenchymal tumors Pheochromocytoma', 'role': 'assistant'}]