Fig. 3.

Presentation at 8 month mark:

(A, B) AP and lateral plain radiographs showing large radiolucent lesion with cortical erosion and soft tissue extension; (C) Coronal STIR weighted MR image demonstrates marrow replacement by soft tissue lesion with soft tissue extension; (D) Thallium scan demonstrates peripheral thallium avidity of the proximal right tibia on 4 h planar images; (E) Histology confirms aneurysmal bone cyst; (F) Clinical photo of resection specimen showing bony replacement and soft tissue expansion.