Abstract：
BACKGROUND:De novo aneurysm formation has been reported as a rare complication of superficial temporal artery (STA) to middle cerebral artery (MCA) bypass surgery. CASE DESCRIPTION:The first patient with intracerebral hemorrhage had a ruptured de novo aneurysm arising from the recipient MCA at 6 years after undergoing STA-MCA bypass for hemispheric hemodynamic insufficiency. In the second case, an enlarging unruptured STA aneurysm was detected by follow-up magnetic resonance angiography at 8 years after the patient underwent STA-MCA bypass for moyamoya disease. Both patients were successfully treated by surgical clipping. CONCLUSIONS:Persistent hemodynamic stress with hypertension in an artificial T-shaped vasculature and traumatic injury during surgical manipulation are the most important causes for de novo aneurysms after STA-MCA bypass. Follow-up magnetic resonance and computed tomography angiography examinations, along with appropriate blood pressure control, are recommended for patients who have undergone STA-MCA bypass surgery.
journal_name
World Neurosurgjournal_title
World neurosurgeryauthors
Yokota H,Yokoyama K,Noguchi Hdoi
10.1016/j.wneu.2016.05.075subject
Has Abstractpub_date
2016-08-01 00:00:00pages
583.e7-583.e12eissn
1878-8750issn
1878-8769pii
S1878-8750(16)30349-7journal_volume
92pub_type
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