Development of a posterior cerebral artery aneurysm subsequent to occlusion of the contralateral internal carotid artery for giant cavernous aneurysm.
We report a case of a patient who developed a left posterior cerebral artery aneurysm 5 years after balloon occlusion of the right internal carotid artery for a giant cavernous aneurysm. The location of the new aneurysm was outside of the primary collateral pathways to the contralateral, proximally occluded, anterior circulation, illustrating the complexity of hemodynamic factors contributing to the development of intracranial saccular aneurysms. The appearance of an aneurysm in this setting supports the hypothesis that degenerative factors and hemodynamic stresses are important in the etiology of intracranial aneurysms.
Wolf
R L
RL
Department of Radiology, Section of Neuroradiology, University of Pennsylvania Medical Center, Ground Floor Founders Building, 3400 Spruce Street, Philadelphia 19104, USA. wolf@rad.upenn.edu
Imbesi
S G
SG
Galetta
S L
SL
Hurst
R W
RW
Sinson
G P
GP
Grossman
R I
RI
D021721:Balloon Occlusion / Q000009:adverse effects*; D002340:Carotid Artery Diseases / Q000503:physiopathology / Q000628:therapy*; D002343:Carotid Artery, Internal / Q000503:physiopathology; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000209:etiology* / Q000503:physiopathology; D008875:Middle Aged