Brodie abscess radiograph

Lateral (A) and frontal (B) radiographs of the right lower extremity demonstrate an ovoid lucent lesion in the medullary cavity of the proximal metadiaphysis of the tibia (arrows) with associated periosteal reaction (arrowheads). The lateral radiograph (A) also demonstrates irregular cortical lucency anteriorly suggesting an area of focal cortical disruption (dashed arrow).