Sildenafil-Induced Cervical Spinal Cord Infarction

A, Midsagittal T2 STIR image shows high signal intensity (arrow) in the midcervical spinal cord predominantly in its anterior aspect. B, Axial T2-weighted image demonstrates that the high signal intensity abnormality predominantly involves the anterior gray matter horns. C, Midsagittal DWI shows high signal intensity (arrow) in the cord corresponding to the abnormality shown in A. D, Corresponding apparent diffusion coefficient map shows low signal intensity (restricted diffusion, arrow) in the same location.