Ruptured aneurysm of the spinal artery of Adamkiewicz during pregnancy.

Solitary aneurysms of the extramedullary arteries of the spinal cord, not associated with arteriovenous malformations from which they are clinically indistinguishable, are rarely reported; only four cases have appeared in the recent literature. An aneurysm of the great anterior radicular artery of Adamkiewicz was found at autopsy in a 34-year-old pregnant woman. The aneurysm had ruptured into the subarachnoid space.