Giant cell tumor - distal radius

This 25-years old lady showed an expansile, osteolytic, trabeculated lesion involving the epiphysis and metaphysis of the distal end of the radius, with a narrow zone of transition, the lesion extending upto the articular surface (Figs. 1, 2). There appeared to an anterior cortical break (Fig. 2). The MRI showed the lesion to be isointense on the T1W images (Fig. 3) and mildly hyperintense on the T2W images (Fig. 4) with a focal area of necrosis (red arrowhead). The anterior cortical break (red arrow) and extra-osseous extension of the soft tissue, was well appreciated on the T2W sagittal image (Fig. 4).