Peripheral nerve involvement in a neurofibromatosis type 2 patient with plexiform neurofibroma of the cauda equina: a sonographic vignette.

We report a 20-year-old man with cauda equina syndrome and neurofibromatosis type 2. We discuss the role of sonographic and electromyographic evaluations in the management of our patient and suggest the use of sonographic imaging for visualization of peripheral nerve pathologic states, especially when involvement is widespread.