<prompt> Common causes of veebra planaTBEosinophilic granulomaMetastasisAll of the above  <response>: 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, Ewings sarcoma, lymphoma Osteochondritis of veebral body Calves disease Hemangioma Trauma Steroids 