Controversies on treatment of unruptured intracranial aneurysms. Value of UIATS and PHASES scores in a daily practice in a Spanish population

Patients with CM had lower UIATS/PHASES scores than those with IM, matching the recommendation from these scores. In contrast, UIATS score in UIAs that were managed with IM showed lower punctuations than expected, showing an institutional preference for IM. In multiple UIAs, UIATS/PHASES scores of the aneurysm leading to IM (excluding other lower risk lesions treated with the same approach) showed higher punctuations, especially in the surgical group. Final decision on treatment of UIAs in our center was mostly based on high-risk profile of aneurysm and multiplicity than on scores, p < 0.001. In our experience UIATS/PHASES scores help in decision-making process, however institutional characteristics should be taken into consideration.