Fig. 12
From: Understanding a mass in the paraspinal region: an anatomical approach
Spinal osteoblastoma of the C6 in a 36-year-old male with intense cervical pain, worse at night, and decreased range of motion. Anteroposterior radiograph of the cervical spine (a) shows a mixed lesion of the right transverse process of C6 (white arrows). Axial CT reconstruction (b) scan shows a lytic lesion with an internal calcification (black arrow) and a rim of sclerosis (black arrowhead). Gadolinium-enhanced fat-suppressed axial T1WI (c) shows heterogeneous enhancement of the mass with associated enhancement of the surrounding paraspinal soft tissues termed ‘the flare phenomenon’ (white arrowheads). The mass invades the epidural space (black arrowhead)