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: Radiology
[{'content': 'A child presents with multiple veebral anomalies and a posterior mediastinal mass. Likely diagnosis is: \nSelect and explain. \nA. Neuroenteric cyst, B. Meningomyelocele, C. Bronchogenic cyst, D. Neuroblastoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Neuroenteric cyst', 'role': 'assistant'}]