Fig. 26
From: Understanding a mass in the paraspinal region: an anatomical approach
Muscle and bone metastasis from a lung cancer in a 70-year-old male with acute back pain. Contrast-enhanced axial CT scan reconstruction (a) and axial contrast-enhanced T1WI (b) show a spinal metastasis extending into the psoas muscle and the epaxial region (arrow) and an intramuscular metastasis (arrowhead). The yellow star shows the epicentre of the mass