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: Pathology
[{'content': 'The radiograph of skull is suggestive of which of the following diagnosis ? \nSelect and explain. \nA. Malignant melanoma, B. Multiple myeloma, C. Sickle cell anemia, D. Langerhans cell histiocytosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Radiograph of a patient with sickle cell anemia showing a thickened diploic space and thinning of the skull cortex. Skull showing the hair-on end bone pattern.', 'role': 'assistant'}]