Fig. 6

Giant cell tumour of distal radius. a. CR (AP view) showing an osteolytic lesion in the distal epiphysis of the radius (arrow). There is no major cortical breakthrough visible on CR. b. Axial CBCT reconstruction clearly show cortical breakthrough of the lesion. The precise extent of the soft tissue involvement is inaccurate due to insufficient soft tissue contrast. c. On axial T1-WI MRI, the lesion is isointense to muscle with cortical disruption at the volar aspect and involvement of pronator quadratus muscle. MRI is far superior for evaluation of the soft tissue component of the lesion