Intraosseous lipoma: 25-year-old female with ankle pain. Lateral radiograph (a) of the right ankle reveal a radiolucent lesion in the anterior portion of the calcaneus with a thin sclerotic border. Axial (b) and sagittal (c) non-contrast CT images again demonstrate the well-circumscribed lesion in the anterior calcaneus with thin sclerotic rim. These images demonstrate the fat attenuation within the periphery of the lesion with central soft tissue density and calcification.