Fig. 2

Case 4

Lateral radiograph of the right lower extremity (a) shows linear subperiosteal new bone formation along the mid tibial diaphysis

The fat-saturated sagittal (b) and axial (c) T2 MR images of the right lower extremity obtained 4 months after the aforementioned x-rays show periosteal reaction along the mid right tibial diaphysis associated with increased signal intensity within the underlying cortex and bone marrow and at a lesser extent, anterior soft tissues (arrows). Low signal intensity is noted in the corresponding regions of the axial T1 (d) MR image. No discrete fracture line is noted