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': "The most likely pathology associated with the following radiograph is: \nSelect and explain. \nA. Chronic suppurative (or rarefying) osteomyelitis, B. Acute osteomyelitis, C. Garre's osteomyelitis, D. Sclerosing osteomyelitis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Garre’s osteomyelitis\nThe condition occurs almost exclusively in young people and has a predilection for the mandible. The condition presents purely as a periosteal reaction to low-grade infection.\nRadiological signs\nThere may be a grossly carious tooth present or evidence of pericoronitis. Radiological change is usually restricted to the laying down of periosteal new bone either as an “onion skin” reaction or as a more extensive thickening of the whole body of the mandible.\nKey Concept', 'role': 'assistant'}]