TY - JOUR T1 - Retreatments must be included in the evaluation of device performance JF - Journal of NeuroInterventional Surgery JO - J NeuroIntervent Surg SP - e5 LP - e5 DO - 10.1136/neurintsurg-2020-016619 VL - 13 IS - 4 AU - René Chapot AU - Pascal J Mosimann AU - Tim E Darsaut AU - Jean Raymond Y1 - 2021/04/01 UR - http://jnis.bmj.com/content/13/4/e5.abstract N2 - We would like to comment on the conclusions of the recent paper reporting the 3 year follow-up results of the Webcast studies1: ‘This analysis confirms the high safety profile of WEB…the great stability of aneurysm occlusion in 83.6% of aneurysms’.It is not easy to criticize a manuscript written by 17 experts, including many prominent leaders of the neurovascular field and several close friends, particularly one where superlatives (‘high safety’ and ‘great stability’) and ‘GCP’ (n=8) are used repeatedly. Yet, as true friends, we must tell the ‘ugly truth’: 10 years after its introduction, the evidence supporting the use of WEB in the treatment of aneurysms (mainly small unruptured aneurysms) is weak; a case series of 100 or so highly selected patients, recruited in … ER -