Co-prevalence of extracranial carotid aneurysms differs between European intracranial aneurysm cohorts.
Constance J H C M van LaarhovenVanessa E C PourierAntti E LindgrenMervyn D I VergouwenJuha E JääskeläinenGabriël J E RinkelDominique P V de KleijnGert J de BorstPublished in: PloS one (2020)
The co-prevalence of ECAA in IA patients was twice as high in the Finnish compared to the Dutch IA cohort, with origin of country and male gender as independent predictors. Twenty-five percent of ECAAs would be missed, if the carotid bifurcation was not imaged. Therefore, we propose to always include imaging of the carotid bifurcation as the gold standard technique to identify ECAA in IA patients.