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21488 Radiology

A 33-year-old man presented with a slowly progressive swelling in the middle third of his right tibia. X-ray examination revealed multiple sharply demarcated radiolucent lesions separated by areas of dense and sclerotic bone. Microscopic examination of a biopsy specimen revealed island of epithelial cells in a fibrous stroma. Which of the following is the most probable diagnosis?

AAdamantinoma
BOsteofibrous dysplasia
COsteosarcoma
DFibrous coical defect
Radiology
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