Current trends in the surgical management of blister aneurysms. An illustrative case series

Blister like aneurysm: a review about its surgical management / Aneurismas blister-like: uma revisão sobre seu manejo cirúrgico

“…Blister aneurysms are rare brain vascular lesions of uncertain pathogenesis (1) . Overall, they represent 0.3% -1.0% of all intracranial aneurysms and 0.9% -6.5% of all ruptured intracranial aneurysms (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11) . They are associated with high morbidity and mortality (9,12,13) .…”

“…They are associated with high morbidity and mortality (9,12,13) . If we compare them to the saccular aneurysm, it is noticed that they affect a younger population (1,3,13) . The first description was made by Sundt and Murphey in 1969, where they anatomically defined the aneurysm as a shallow and broad based or semi fusiform focal protrusion (1,3,4,6,11,(14)(15)(16) .…”

“…If we compare them to the saccular aneurysm, it is noticed that they affect a younger population (1,3,13) . The first description was made by Sundt and Murphey in 1969, where they anatomically defined the aneurysm as a shallow and broad based or semi fusiform focal protrusion (1,3,4,6,11,(14)(15)(16) . The most common location is the supraclinoid internal carotid artery (ICA) (1,(3)(4)(5)7,(10)(11)(13)(14)(15)(17)(18) .…”

“…III -longitudinal, where it affects a longer portion of the carotid, even larger than the diameter. IV -circumferential, where the lesion has an extension around the carotid (1,9) . Although saccular aneurysms have an intimal relation with major arterial junctions, the same cannot be expected with blister aneurysms (1,5,8,11,(15)(16)18) .…”

“…IV -circumferential, where the lesion has an extension around the carotid (1,9) . Although saccular aneurysms have an intimal relation with major arterial junctions, the same cannot be expected with blister aneurysms (1,5,8,11,(15)(16)18) . In this type of lesion, they can be found in 65% of cases arising from the anteromedial carotid wall (1,13) .…”