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': 'Common causes of veebra plana \nSelect and explain. \nA. TB, B. Eosinophilic granuloma, C. Metastasis, D. All of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'd' i.e., All of the above Veebra plana This term is used to describe uniform collapse of a veebral body into a thin, flat disc. The most common cause is eosinophilic granuloma, with the thoracic veebrae most frequently affected. Causes are :? Histocytosis - X (Eosinophilic granuloma) Leukemia TB Metastasis, Multiple myeloma, Ewing's sarcoma, lymphoma Osteochondritis of veebral body (Calve's disease) Hemangioma Trauma Steroids", 'role': 'assistant'}]