In recent years, several reports on vascular anomalies of the spinal cord have appeared in the medical literature.1-6Various names have been used to designate this clinical condition. Wyburn-Mason3named it "arterial anomaly" and objected to other designations which were found in the literature, such as angioma arteriale racemosum, cirsoid aneurysm, angioma plexiforme, and varix arterialis or aneurysmaticus. Arterial anomaly of the spinal cord is not generally considered a common disease by clinicians. However, the significant findings of Brion, Netsky, and Zimmerman5at necropsy indicate that it may be commoner than has previously been believed. In a review of 31 cases which presented a clinical picture of transverse or diffuse "myelitis," they found that in 9 the lesion of the cord was a myelomalacia secondary to malformation of the vessels of the spinal cord. Apparently, this condition is easily misdiagnosed as transverse myelopathy, and probably the misdiagnosis