Parent Artery Occlusion for Unruptured XXXX : The Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2.

@entity1 @entity438 @entity439 @entity432 @entity385
Parent @entity432 (PAO) is an alternative to surgical clipping or endovascular endosaccular coil embolization for the management of @entity438 . Most @entity439 are not amenable to endosaccular coil embolization due to anatomical considerations, such as a broad-neck. However, majority of reports regarding the safety of PAO are based on case series involving a relatively small number of @entity1 . In the present study, a total of 381 consecutive @entity1 with unruptured @entity438 who were treated with PAO were extracted from the Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and JR-NET2 database, which are nationwide surveys conducted by the Japanese Society of Neuroendovascular Therapy. The mean age of the 381 @entity1 was 58.1 years, and 59.3% were female. The aneurysmal location included the vertebral artery (42%) and the cavernous portion of internal carotid artery (32%). The @entity439 size and shape consisted of fusiform (45%), giant (25%), and large (22%). Symptomatic lesions were present in 59.8% of the population. Technical success was achieved in 98.4%. The 30-day morbidity and mortality rates were 3.1% and 1.0%, respectively. The most frequent procedure-related complication was @entity385 , which occurred in 12.9% (distal embolism, 6.0%; branch occlusion, 3.9%). The 30-day morbidity and mortality rates related to @entity385 were 2.1% and 0.3%, respectively. PAO for @entity439 is feasible with a high technical success rate. Peri-procedural management of @entity385 is the key to enhance the safety of this treatment option.
