% strPathPics = Session("strPathPicsL") imgBg = strPathPics + Session("strMedia") %>
A 72 year-old man noted chronic low back pain, worst with standing and walking.
(Left) Axial T2-weighted MRI at L3; (Right) Axial T2-weighted MRI at the L4-5 disk level. Note the severe stenosis at the L4-L5 level with the complete absence of CSF. Contrast this to a normal level above at the L3 level and the normal amount of CSF surrounding the descending nerve roots of the cauda equina.
The Electronic Curriculum is copyrighted 1998, Case Western Reserve University School of Medicine.