Flow-diverting stents in the treatment of intracranial aneurysms

Aneurysms are regarded as "complex" when they are challenging to treat using conventional surgical or endovascular approaches. Complexity is typically associated with very large or giant size, dysplastic or fusiform morphology, recurrence after prior surgical or endovascular treatment, and other anatomical features making conventional surgical or endovascular treatment challenging or impossible. Flow-diverting stents may allow a constructive, technically feasible, defi nitive, and durable treatment option in many of these cases that were previously deemed "complex" or "untreatable" in the past.