Endovascularmanagement Of Ruptured Distal Posterior Inferior Cerebellar Artery Aneurysms

Background:Posterior inferior cerebellar artery aneurysms(PICAA)have low rate in intracranial aneurysms.The management of distal PICA aneurysms remains controversy lacking convenient evidence.Endovascular management of PICA aneurysms is reported to be a safe and efficient way though the best procedure and the safety of parent vessel occlusion still need to be investigated.Objective:To compare the difference between coiling and parent vessel occlusion and figure out the factors effect the out coming.Methods:All of the patients diagnosed with PICAA and treated with endovascular management in our hospital from July 2009 to February 2016 was retrospectively analyzed,including the rate of success,procedure related complications and mRS,etc.Results:36patients were finally included meeting the criterions.26(72.22%)females and 10(27.78%)males.The median of H&H classification is 3.New infarction was seen in 12(34.29%)patients while 3 remains coma before operation and other 9 with no apparent dysfunctions.21(77.14%)patients got a mRS score less than 3 at the discharge.28(84.85%)patients one year after the operation.While 27(90%)and 20(90.91%)patients two and three years after.There are no significant difference between patient treated with coiling or parent vessel occlusion on both complications and mRS score.H&H classification,age as well as hydrocephalus are associated with mRS score.Conclusions:Endovascular management of distal PICA aneurysms are safe and efficient besides microsurgery.Parent vessel occlusion and coiling are optional choice depended on condition of patients without difference in complications and outcoming.H&H classification,age as well as hydrocephalus are associated with mRS score.