TY - JOUR T1 - Prevalence of Intracranial Aneurysms in Patients with Aortic Aneurysms JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. DO - 10.3174/ajnr.A4827 AU - A. Rouchaud AU - M.D. Brandt AU - A.M. Rydberg AU - R. Kadirvel AU - K. Flemming AU - D.F. Kallmes AU - W. Brinjikji Y1 - 2016/06/02 UR - http://www.ajnr.org/content/early/2016/06/02/ajnr.A4827.abstract N2 - BACKGROUND AND PURPOSE: Previous studies have suggested an association between aortic aneurysms and intracranial aneurysms with a higher prevalence of intracranial aneurysms in patients with aortic aneurysms. The aims of the present study were to evaluate the incidence of intracranial aneurysms in a large cohort of patients with aortic aneurysms and to identify potential risk factors for intracranial aneurysms in this population.MATERIALS AND METHODS: We included all patients with aortic aneurysms (either abdominal and/or thoracic) who had available cerebral arterial imaging and were seen at our institution during a 15-year period. We identified patients with intracranial aneurysms. Patient demographics, comorbidities, and aortic aneurysm and intracranial aneurysm sizes and locations were analyzed. Univariate analysis was performed with a χ2 test for categoric variables and a Student t test or ANOVA for continuous variables.RESULTS: A total of 1081 patients with aortic aneurysms were included. Of them, 440 (40.7%) had abdominal aortic aneurysms, 446 (41.3%) had thoracic aortic aneurysms, and 195 (18.0%) had both abdominal aortic and thoracic aortic aneurysms. The overall prevalence of associated intracranial aneurysms in patients with aortic aneurysms was 11.8% (128/1081), with 12.7% (56/440), 10.8% (48/446), and 12.3% (24/195), respectively, in patients with abdominal aortic aneurysms, thoracic aortic aneurysms, and both thoracic aortic aneurysms and abdominal aortic aneurysms. Female patients had a higher risk of associated intracranial aneurysms (OR = 2.08; 95% CI, 1.49–3.03; P = .0002). There was a slight association between abdominal aortic aneurysm size and the prevalence of intracranial aneurysms (OR = 1.02; 95% CI, 1.01–1.03; P = .045). There was no significant association between the locations of the aortic and intracranial aneurysms (P = .93).CONCLUSIONS: The prevalence of intracranial aneurysms is high in patients with aortic aneurysms. Further studies examining the role and cost-effectiveness of intracranial aneurysm screening in patients are warranted.AbbreviationsAAaortic aneurysmAAAabdominal aortic aneurysmADPKDautosomal dominant polycystic kidney diseaseIAintracranial aneurysmTAAthoracic aortic aneurysm ER -