A case of cervical internal carotid artery occlusion presenting with subarachnoid hemorrhage caused by rupture of leptomeningeal anastomosis

Tsuyoshi Tsukada, Toru Masuoka, Hideo Hamada, Shoutarou Ltou, Takuya Akai, Hideaki Lizuka

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A 71-year-old man was admitted to our hospital with a diagnosis of subarachnoid hemorrhage (SAH). Angiographies revealed neither aneurysms nor vascular anomalies. However, these images elucidated the occlusion of the left cervical internal carotid artery as well as developed leptomeningeal anastomoses through the ipsilateral posterior cerebral artery, which resulted in blood perfusing the ipsilateral middle and anterior cerebral artery territories. Because the localization of SAH coincided with the developed leptomeningeal anastomosis, we speculated that the rupture of the developed leptomeningeal anastomosis in the basal cistern was the cause of SAH. We performed superficial temporal and middle cerebral artery bypass surgery to prevent rebleeding and ischemic stroke. In patients with occlusion of the internal carotid artery, SAH induced by the rupture of aneurysm formed by hemodynamic stress was recognized. However, rupture of developed leptomeningeal anastomosis should be considered as a possible cause of SAH of unknown origin.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalBrain and Nerve
Volume69
Issue number1
StatePublished - 2017/01

Keywords

  • Cervical internal carotid artery occlusion
  • Leptomeningeal anastomosis
  • Subarachnoid hemorrhage

ASJC Scopus subject areas

  • General Medicine

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