RT Journal Article
SR Electronic
T1 Spinal Vascular Shunts: A Patterned Approach
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
DO 10.3174/ajnr.A7312
A1 M.P. Kona
A1 K. Buch
A1 J. Singh
A1 S. Rohatgi
YR 2021
UL http://www.ajnr.org/content/early/2021/10/14/ajnr.A7312.abstract
AB SUMMARY: Spinal vascular shunts, including fistulas and malformations, are rare and complex vascular lesions for which multiple classification schemes have been proposed. The most widely adopted scheme consists of 4 types: type I, dural AVFs; type II, intramedullary glomus AVMs; type III, juvenile/metameric AVMs; and type IV, intradural perimedullary AVFs. MR imaging and angiography techniques permit detailed assessment of spinal arteriovenous shunts, though DSA is the criterion standard for delineating vascular anatomy and treatment planning. Diagnosis is almost exclusively based on imaging, and features often mimic more common pathologies. The radiologist’s recognition of spinal vascular shunts may improve outcomes because patients may benefit from early intervention.ASAanterior spinal arteryCSclassification schemeIPAVFintradural perimedullary arteriovenous fistulaPSAposterior spinal arterySDAVFspinal dural arteriovenous fistulaSGAVMspinal “glomus” arteriovenous malformationSJAVMspinal juvenile (metameric) arteriovenous malformationSVSspinal vascular shunt