CT-guided percutaneous biopsy (124/552; 5.0-mm collimation, 512 × 512, 140 KV). A, Expansile lytic bone lesion with a soft tissue mass replacing the pedicles, lamina, and transverse processes of T6. B, Placement of the biopsy needle (Cook M-1 13 gauge; Cook, Bloomington, Ind) into the mass.