Giant axonal neuropathy with subclinical involvement of the central nervous system: case report.

The case of a 17-year-old girl with slowly progressive sensory-motor neuropathy is described. Sural nerve biopsy showed abnormally enlarged exons filled with neurofilaments. Neurofilament accumulation was limited to the axons and was not found in other cells of the skin or peripheral nerve. The patient showed EEG and brain MRI abnormalities, but there was no clinical evidence of central nervous system involvement. Although these findings suggest an atypical attenuated form of giant axonal neuropathy, a new nosological entity cannot be excluded.