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AJNR - American Journal of Neuroradiology

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Subarachnoid Hemorrhage Due to Isolated Spinal Artery Aneurysm in Four Patients

Manoj G. Massand^a, Robert C. Wallace^a, L. Fernando Gonzalez^b, Joseph M. Zabramski^b and Robert F. Spetzler^b

^a Division of Neuroradiology, Barrow Neurological Institute, Phoenix, AZ
^b Division of Neurological Surgery, Barrow Neurological Institute, Phoenix, AZ

View larger version (107K): [in a new window]   FIG 1. Selective angiogram of the left artery of Adamkiewicz at T11 showing a fusiform aneurysm (arrow). Reprinted with permission from Lippincott Williams & Wilkins.

View larger version (94K): [in a new window]   FIG 2. (A) Selective angiogram of the left L1 spinal artery showing 2 aneurysms (arrows). (B) Additional view of left L1 spinal artery injection showing 2 aneurysms (arrows).

View larger version (149K): [in a new window]   FIG 3. (A) Initial sagittal T2-weighted MR image showing a large amount of subarachnoid hemorrhage (arrows) at the thoracolumbar junction but no definite focal lesion. (B) Initial axial T2-weighted MR images showing a large amount of subarachnoid hemorrhage (arrows).

View larger version (111K): [in a new window]   FIG 4. (A) Sagittal and (B) axial T2-weighted images obtained 11 days after the patient’s first MR imaging showing a more focal lesion adjacent to the conus medullaris at T12 (arrow).

View larger version (75K): [in a new window]   FIG 5. Selective angiographic injection of the left T6 spinal artery showing an aneurysm (arrow) involving the radicular branch.