1. Myelogram in a 30-year-old man with radicular pain.
Myelogram in a 30-year-old man with radicular pain. A, Lateral lumbar myelographic image shows a typical extradural defect indenting the ventral dural sac at L4-L5 (arrow). B, Frontal lumbar myelographic image shows the defect, which is also resulting in poor filling of the right L5 nerve root sleeve (black arrow). Note that the needle remains in place (white arrow), presumably for removing the contrast.
E.G. Hoeffner et al. AJNR Am J Neuroradiol 2012;33:
©2012 by American Society of Neuroradiology