Late nervous system disorders in cured malignant lymphoma: a clinical and neuropathological study.

A 53-year-old woman was treated for and cured of low grade malignant lymphoma, localized to the neck, by irradiation and chemotherapy. One year later she developed signs of damage to the spinal cord with slight paraparesis of the lower extremities, which remained stationary for seven years. Then, new and rapidly progressive central and peripheral neurological symptoms developed. About one year later the patient died. At autopsy a malignant glioma of the right temporal lobe and radiation damage to the spinal cord were found. Lymphocytic infiltrations in the peripheral nerves and muscles of the lower extremities were also seen. A severe neurogenic atrophy was present but no relapse of malignant lymphoma was found. Depressed immune defense is suggested to be the cause of the pathological changes of the nervous system in this case. The inflammation of the peripheral nerves might be due to activation of a latent virus infection.