Presentation
Lateral ankle pain
Patient Data
Age: Young adult
Gender: Male
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
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Frontal

A sclerotic cortical based lesion is noted at the distal fibular metaphysis with internal lucency.
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Axial bone window

A cortical based sclerotic lesion is noted at the lower fibular metaphysis with central sclerotic nidus with regular thin osteolytic halo. Features typical of osteoid osteoma.

Distribution of osteoid osteomas. Layout and distribution: Frank Gaillard 2012, Line drawing of skeleton: Patrick Lynch 2006, Creative Common NC-SA-BY
Case Discussion
This demonstrate typical imaging features of an osteoid osteoma.