TY - JOUR T1 - Correspondence on “Delayed collapse of flow diverter due to acute severe vasospasm: another concern for flow diversion in ruptured aneurysms” by Kumar <em>et al</em> JF - Journal of NeuroInterventional Surgery JO - J NeuroIntervent Surg DO - 10.1136/jnis-2022-019325 SP - jnis-2022-019325 AU - Francesco Mistretta AU - Riccardo Russo AU - Stefano Molinaro AU - Mauro Bergui Y1 - 2022/08/02 UR - http://jnis.bmj.com/content/early/2022/08/02/jnis-2022-019325.abstract N2 - We read with interest the case report by Kumar et al published online in June 2022.1 The authors deployed a flow diverter stent (FDS) (Silk Vista Baby, Balt, Montgomery, France) on a ruptured dissecting aneurysm of the right posterior cerebral artery. In the following days an extensive remodeling of the FDS was evident, including both dilation at the base of the aneurysm and stenosis at the proximal end (so-called fish-mouthing), the latter due to spasm of the basilar artery. Despite resolution of the spasm, the proximal stenosis did not resolve. The FDS prevented further re-bleeding; however, the patient eventually died from … ER -