MRI
Coronal T1
Coronal STIR
Sagittal T1
Axial PD fat sat
Axial STIR
Axial T1
Axial T1 C+
MR T1 coronal image demonstrates the wide cortical thickening. T1-weighted images show the low-signal-intensity nidus, which has strong enhancement. STIR images shows a intracortical osteoid osteoma of the right proximal femur, with inflammatory reaction in the adjacent cancellous bone and in the soft tissues.