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Dentistry · Oral pathology: ameloblastoma
Sample itemA 35-year-old has a slowly growing painless swelling of the mandibular angle. Radiograph shows a multilocular soap-bubble radiolucency with root resorption. What is the most likely diagnosis?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Ameloblastoma
Ameloblastoma is the commonest clinically significant odontogenic tumour, usually in the posterior mandible, and gives a multilocular soap-bubble or honeycomb picture. It is benign but locally aggressive and needs adequate surgical margins.
Option by option
A. Chronic osteomyelitis
Osteomyelitis shows pain, sequestra and moth-eaten bone.
B. Periapical cyst
A periapical cyst is unilocular and related to a non-vital tooth apex.
C. Ameloblastoma (correct)
Correct. The site and radiographic pattern are classic.
D. Cementoblastoma
Cementoblastoma is a radiopaque mass fused to a tooth root.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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