Aneurysmal bone cyst

Case contributed by Frank Gaillard

Patient Data

Age: 12 years
Gender: Male

An expansile lucent lesion in the metadiaphysis of the tibia has a narrow zone of transition and lacks cortical breach, fracture or periosteal reaction. It does not reach the growth plate which remains normal. 

Case Discussion

This patient went on to have a curettage which histologically confirmed this lesion to be an aneurysmal bone cyst (ABC). This case illustrates a fairly typical location and appearance. 

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