Fig. 2.

Flame sign. A 55-year-old man with metastatic small cell lung carcinoma who presented with severe midback pain, progressive weakness, and altered sensation in both lower extremities. MR imaging of the thoracic spine demonstrates intramedullary spinal cord metastasis at T3–4. Sagittal T2-weighted (A), T1-weighted (B), and postcontrast T1-weighted (C) images. Note the flame sign (arrow, C): an ill-defined flame-shaped region of enhancement at the inferior margin of the otherwise well-defined mass.