Male, 40 years old, with right-sided radiculopathy. Evaluate for amyloid infiltration of the lumbosacral plexus or sciatic nerve. The lumbosacral plexi are well visualized bilaterally. The constituent nerve roots are symmetric in caliber and free of pathologic signal abnormality. In addition, dedicated high-resolution imaging of the right sciatic nerve shows no convincing evidence of edema or abnormal thickening. No impingement or compressive lesion is demonstrated. No marrow edema is present in the osseous structures of the pelvis or hips.
No evidence to suggest abnormal nerve root thickening or infiltration affecting the lumbosacral plexus or the right sciatic nerve. No other specific findings are seen which would account for the patient's symptoms.