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Response to: Correspondence on ‘Delayed collapse of flow diverter due to acute severe vasospasm: another concern for flow diversion in ruptured aneurysms’ by Kumar et al
  1. Ajay Kumar,
  2. Neha Choudhary,
  3. Anuj Prabhakar,
  4. Vikas Bhatia
  1. Department of Radiodiagnosis and Imaging, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
  1. Correspondence to Dr Neha Choudhary, Radiodiagnosis and Imaging, Post Graduate Institute of Medical Education and Research, Chandigarh, India; choudhary.neha1010{at}

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Dear editor,

We thank the authors for sharing their experience of ruptured aneurysms successfully treated with flow diverter stents (FDS).1 There are various causative factors of fish-mouthing and it can occur with any device. However, in our case, the device conformed to the morphology of the severely spastic vessel and collapsed at the proximal end. Other causative factors of morphological change of the device, such as insufficient proximal landing zone, oversizing, incomplete opening, …

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  • Contributors All authors contributed equally.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

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