Fig. 3
From: Imaging algorithm and multimodality evaluation of spinal osteoblastoma
Osteoblastoma in a 28-year-old male, Enneking stage 2 on CT. a Axial CT soft tissue window shows a hypo-dense soft tissue mass (arrow) medial to the left psoas major muscle, which demonstrates the flare phenomenon. b Axial CT bone window shows expansile bone destruction in the lamina of L4 with a large quantity of matrix calcifications and sclerotic changes in the surrounding areas. Note the cortical breakthrough in the left pedicle (arrowhead). c and d F18-FDG PET/CT images show high uptake of FDG (SUVmax: 14.3) in the area of bone destruction, without FDG uptake abnormalities of the surrounding reactive sclerosis or inflamed tissues