The following are multiple choice questions (with answers) about medical knowledge.   **Question:** "Hair-on-end" appearance in a skull roentgenogram is seen in :   (A) Fibrous dysplasia   (B) Thalassemia   (C) Garre's Osteomyelitis   (D) Pagets disease
['(B) Thalassemia <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Fibrous dysplasia \n (B) Thalassemia \n (C) Garre's Osteomyelitis \n (D) Pagets disease <> possible answers", '  "Hair-on-end" appearance in a skull roentgenogram is\nseen in : <> context@']