Cervical disc herniation as visualized with T2-weighted MRI. A Cervical disc herniation as visualized with T2-weighted MRI. A. Parasagittal view of a large posterior disc extrusion at C6-C7. Smaller broad-based posterior disc bulges are seen at C4-C5 and C5-C6. B. Axial view of the large right posterolateral disc extrusion shown in (A) at C6-C7 (arrow) causing severe narrowing of the right neural foramen and compression of the exiting C7 nerve root. C. By way of contrast, an axial view of the broad-based posterior disc bulge at C4-C5 (arrows) causes only minimal narrowing of the spinal canal and no compression of the spinal cord. Source: Chapter 11. Pain in the Back, Neck, and Extremities, Adams and Victor's Principles of Neurology, 10e Citation: Ropper AH, Samuels MA, Klein JP. Adams and Victor's Principles of Neurology, 10e; 2014 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/ropp10/ropp10_c011f006.png&sec=45426312&BookID=690&ChapterSecID=45424419&imagename= Accessed: October 28, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved