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Papers of the Week

2022 Aug 22

J Neurosurg Case Lessons



Ruptured basilar artery perforator aneurysm: a novel mechanism of pure subarachnoid hemorrhage in moyamoya disease. Illustrative case.


Okamura K, Higuchi T, Izumo T, Takahira R, Sadakata E, Yoshida M, Yamaguchi S, Morofuji Y, Baba S, Hiu T, Matsuo T
J Neurosurg Case Lessons. 2022 Aug 22; 4(8).
PMID: 36088605.


Pure subarachnoid hemorrhage (SAH) in patients with moyamoya disease is a rare occurrence. Three underlying mechanisms have been described previously, except for ruptured aneurysm of the circle of Willis. Herein, the authors describe a novel mechanism: rupture of a perforator aneurysm in moyamoya disease.