Figure 2.
Stage IV non-small cell lung carcinoma. (A) Sagittal T1-weighted MRI with contrast shows retropulsed endplate of S1 vertebral body (arrow) compressing foramen; (B) axial-T1-weighted MRI with contrast shows the tumor invasion in the body and pedicle (arrow) of the sacrum; (C) lateral fluoroscopic image of the beveled tubular retractor in the left L5-S1 foramen; (D) AP fluoroscopic image of the beveled tubular retractor in the left L5-S1 foramen. AP, anterior-posterior; MRI, magnetic resonance imaging.
