SUMMARY: Flow diversion has become an established treatment option for challenging @entity438 . The use of small devices of  <=3-mm diameter remains unapproved by major regulatory bodies. A retrospective review of @entity1 treated with Pipeline Embolization Devices of  <=3-mm diameter at 3 Canadian institutions was conducted. Clinical and radiologic follow-up data were collected and reported. Twelve cases were treated with >= 1 Pipeline Embolization Device of  <=3-mm diameter, including 2 with adjunctive coiling, with a median follow-up of 18 months (range, 4-42 months). One @entity1 experienced a posttreatment minor complication (8%) due to an @entity1188 . No posttreatment @entity548 or delayed complications such as in-stent stenosis/ @entity715 were observed. @entity432 was seen in 9/12 cases (75%) and near-occlusion in 2/12 cases (17%). Intracranial @entity439 treatment with small-diameter flow-diverting stents provided safe and effective @entity439 closure in this small selected sample. These devices should be further studied and considered for regulatory approval.

Small Pipes: Preliminary Experience with 3-mm or Smaller Pipeline Flow-Diverting Stents for XXXX Repair prior to Regulatory Approval.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhage'] @entity1188 :: ('MESH:D007238', 'Disease') :: ['embolic infarct'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysm'] @entity432 :: ('MESH:D001157', 'Disease') :: ['Radiologic occlusion'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombosis'] @entity438 :: ('MESH:D002532', 'Disease') :: ['intracranial aneurysms']
@entity439 :: (MESH:D000783,Disease) :: ['Aneurysm']
