Endovascular management of recurrent aneurysms.

As neuroendovascular interventions for both ruptured and unruptured intracranial aneurysms have come to the forefront, careful follow-up and strategies for retreatment of aneurysmal recurrences have become increasingly important. Endovascular approaches have also proven to be valuable adjuncts for managing recurrent aneurysms previously treated by open microsurgical approaches. Fortunately, retreatment of recurrent aneurysms can be performed safely, and the use of stents during retreatment has increased the proportion of durably retreated aneurysms. More recently, the spectrum of recurrent aneurysms readily amenable to endovascular therapy has been expanded by the widespread introduction of flow diverters.