Guillain-Barré syndrome and Hodgkin's disease--ultrastructural study of a peripheral nerve.

A 46-year-old male patient developed the Guillain-Barre syndrome and recovered completely within 3 months. He had been treated 5 years previously for Hodgkin's disease, and during the neurological syndrome, relapse of the malignant lymphoma was discovered. On neuro-muscular biopsy, lymphocytes were observed penetrating Schwann cells. These neuropathological aspects confirm the auto-immune character of the nervous involvement.