Acta Neurochirurgica

, Volume 159, Issue 4, pp 721–724

Angiographic doughnut-shaped aneurysm of intracranial internal carotid artery

  • Chung-Hsin Lee
  • Chih-Hsiang Liao
  • Wen-Hsien Chen
  • Hsu-Tung Lee
  • Yuang-Seng Tsuei
Case Report - Vascular

DOI: 10.1007/s00701-017-3110-7

Cite this article as:
Lee, CH., Liao, CH., Chen, WH. et al. Acta Neurochir (2017) 159: 721. doi:10.1007/s00701-017-3110-7
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Abstract

Morphologic characteristics of angiographic doughnut-shaped aneurysms of the intracranial internal carotid artery (ICA) have been rarely reported in the literature and were discussed only radiologically. In this case, surgical clipping was performed, and the specimen from the aneurysm was examined to correlate the pathologic findings and morphologic characteristics. A 59-year-old male presented with diffuse subarachnoid hemorrhage secondary to a ruptured vascular lesion originating from the intracranial portion of the right ICA. Digital subtraction angiography showed a 1.5-cm doughnut-shaped aneurysm at the junction of the ICA and the posterior communicating artery. The aneurysm was successfully clipped in a neurosurgical hybrid operating room. The pathologic findings of the content inside the aneurysm revealed only fibrinoid exudates, materials from thrombosis. This is the first report to prove that the mechanism of a doughnut-shaped aneurysm formation is central thrombosis inside the aneurysm, possibly related to its complex hemodynamic flow.

Keywords

Clipping Doughnut-shaped aneurysm Hybrid operating room Saccular aneurysm Serpentine aneurysm 

Copyright information

© Springer-Verlag Wien 2017

Authors and Affiliations

  • Chung-Hsin Lee
    • 1
    • 2
  • Chih-Hsiang Liao
    • 1
  • Wen-Hsien Chen
    • 3
  • Hsu-Tung Lee
    • 1
    • 2
  • Yuang-Seng Tsuei
    • 1
    • 2
  1. 1.Department of Neurosurgery, Neurological InstituteTaichung Veterans General HospitalTaichungRepublic of China
  2. 2.Department of Neurosurgery, Tri-service General HospitalNational Defense Medical CenterTaipeiRepublic of China
  3. 3.Department of NeuroradiologyTaichung Veterans General HospitalTaichungRepublic of China