Prevalence of cerebral aneurysms in patients with persistent primitive trigeminal artery.
OBJECTIVE
The aim of this study was to determine the prevalence of cerebral saccular aneurysms in patients with persistent primitive trigeminal artery (PPTA). The prevalence of cerebral saccular aneurysms in patients with PPTA previously has been reported to be 14 to 32%, but this rate range is unreliable because it is based on collections of published case reports rather than a series of patients chosen in an unbiased manner.


METHODS
The authors retrospectively evaluated their own series of 34 patients with PPTA to determine the prevalence of cerebral aneurysms in this population. The prevalence of intracranial aneurysms in patients with PPTA was approximately 3% (95% confidence interval 0-9%).


CONCLUSIONS
The prevalence of intracranial aneurysms in patients with PPTA is no greater than the prevalence of intracranial aneurysms in the general population.
Cloft
H J
HJ
Department of Radiology, Emory University, Atlanta, Georgia, USA. harry_cloft@emory.org
Razack
N
N
Kallmes
D F
DF
D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000453:epidemiology* / Q000209:etiology; D002538:Intracranial Arteriovenous Malformations / Q000150:complications*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D014481:United States / Q000453:epidemiology