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 patient reported with a complaint of missing maxillary canine, a radiograph was taken, which is shown below. What seems to be the most probable reason for the canine to not erupt? \nSelect and explain. \nA. Congenitally missing canine, B. Complex odontoma blocking the path of eruption of canine, C. AOT blocking the path of eruption of canine, D. Compound odontoma blocking the path of eruption of canine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Most odontomas are detected during the first two decades of life, and the mean age at the time of diagnosis is 14 years. The majority of\xa0these lesions are completely asymptomatic, being discovered on a routine radiographic examination or when films are taken to determine\xa0the reason for failure of a tooth to erupt.\nKey Concept\nRadiographically, the compound odontoma appears as a collection of toothlike structures of varying size and shape surrounded by a narrow radiolucent zone.', 'role': 'assistant'}]