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': 'A 30 year old male presents to the clinic with swelling on the left side of his lower jaw. He gives no history of any previous surgical treatment. On extraoral examination, an asymmetrical face is seen. On palpation, bony hard swelling is appreciated.\nUnder polarized light source, apple-green colour birefringence of amyloid deposited in fibrous connective tissue stroma is seen. The most probable diagnosis for this patient is: \nSelect and explain. \nA. Pindborg tumor, B. Complex odontoma, C. Odontogenic myxoma, D. Postsurgical calcifying bony defect', 'role': 'user'}, {'content': "Answer: A \nExplanation: Scattered flecks of calcification throughout the radiolucency have given rise to the descriptive term of a 'driven snow' appearance. Another characteristic feature of the Pindborg tumour is the presence of calcification,\xa0 sometimes in large\xa0amounts and often in the form of\xa0Liesegang rings. The postsurgical calcifying defect is easily eliminated from consideration, if there is no recent surgical procedure in the patient's history. Compound odontomas have a number of tooth-like structures or denticles that look like\xa0deformed teeth.", 'role': 'assistant'}]