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Case report
Republished: Rapid delayed growth of ruptured supraclinoid blister aneurysm after successful flow diverting stent treatment
  1. Stefan Thomas Lang,
  2. Zarina Assis,
  3. John H Wong,
  4. William Morrish,
  5. Alim P Mitha
  1. Department of Clinical Neuroscience, University of Calgary, Calgary, Alberta, Canada
  1. Correspondence to Dr S Thomas Lang, Department of Clinical Neuroscience, University of Calgary, 1403 29th St NW, Calgary, Alberta, Canada T2N 2T9; stefan.t.lang{at}


A 62-year-old woman presented with a subarachnoid hemorrhage secondary to a ruptured right supraclinoid internal carotid artery blister aneurysm. She was treated in an emergent fashion with two flow diverting pipeline embolization devices (PED) deployed in a telescoping fashion. CT angiography performed for unrelated reasons at 7 months showed successful treatment of the aneurysm without evidence of residual aneurysm. However, a follow-up digital subtraction angiogram performed at 9 months showed a large aneurysm in a modified position compared with the original aneurysm. This is the first case of rapid regrowth of a supraclinoid blister aneurysm after successful treatment with a PED, and demonstrates the need for close follow-up for similar aneurysms treated with this novel device.

  • Aneurysm
  • Device
  • Flow Diverter
  • Subarachnoid

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