Peripheral nerve hypertrophy in chronic inflammatory demyelinating polyradiculoneuropathy detected by ultrasonography.

To the Editor Reply: We wish to thank Granata et al for their letter commenting on our article on hypertrophy of peripheral nerves in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) that was detected by ultrasonography. We demonstrated a useful case which exemplifies the detection of segmental lesions of the peripheral nerves in CIDP by ultrasonography. We think that ultrasonography of the peripheral nerves may facilitate the routine neurophysiological examination employing the inching method, as Dr. Granata suggested. It can be applied to the diagnosis of similar diseases in peripheral nerves and for evaluation of the effect of medication. Further investigations with a much larger number of cases are needed.