Foot weakness. Evaluation of the left lumbosacral plexus is requested. There is diffuse heterogeneity of the bone marrow signal which is nonspecific and may be related to marrow reconversion. No discrete destructive osseous lesion is demonstrated.There is no abnormal T2 signal or enhancement involving the lumbosacral nerve roots or the lumbosacral plexus more peripherally in the pelvis. No abnormal signal or enlargement of the sciatic nerves is present. No masses to suggest extrinsic compression. Aortoiliac ectasia again noted. Small disc bulges at L4-L5 and L5-S1 with minimal left neural foraminal narrowing again seen, without clear evidence of impingement.
1. No abnormal signal or evidence of extrinsic compression involving the lumbosacral plexus.2. Diffuse heterogeneity of the bone marrow signal is nonspecific and may represent marrow reconversion. No discrete destructive osseous lesion is appreciated.