A very delayed case of post-irradiation myelopathy with unusual features

A 48 year old man, irradiated 30 years before for a left laterocervical, lymphadenopathy, developed a progressive weakness of the left arm of two years duration. Myelography and other examinations excluded a compressive spinal process. The clinical and neurophysiological data point to a lesion in the spinal gray matter, probably due to the previous radiation treatment.