Fig. 32
From: Understanding a mass in the paraspinal region: an anatomical approach
Ewing sarcoma of L4 in an 18-year-old male with extreme low back pain and acute cauda equina syndrome. Axial CT reconstruction (a) demonstrates a moth-eaten lytic lesion of the transverse process with large paraspinal soft tissue component, best seen on axial T2WI (b) and axial contrast-enhanced, fat-suppressed T1WI (c). Yellow star shows the epicentre of the mass. Lying position in MRI tube caused intense spinal pain, which explains motion of the patient and motion artefacts