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': 'A 21-year-old woman went to her dentist because of facial asymmetry. This had occurred gradually over a period of 3 years. The patient had no symptoms. A diffusely opaque lesion was found in her right maxilla. All lab tests (CBC, alkaline phosphatase, calcium) were within normal limits. Biopsy was interpreted as a fibroosseous lesion. She most likely has _____. \nSelect and explain. \nA. Cementoblastoma, B. Fibrous dysplasia, C. Cherubism, D. Osteosarcoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cherubism is a fibro-osseous lesion that occurs in teenagers. Characteristically, it presents with ill-defined margins and a “ground glass” appearance radiographically. The other features described also support this diagnosis.', 'role': 'assistant'}]