Endovascular Trapping for Ruptured Blood Blister-Like Aneurysm of the Internal Carotid Artery: A Case Report and Review of the Literature

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  • Hayashi Kentaro
    Department of Neurosurgery, Sasebo City General Hospital, Sasebo, Nagasaki, Japan
  • Matsunaga Yuki
    Department of Neurosurgery, Sasebo City General Hospital, Sasebo, Nagasaki, Japan
  • Hayashi Yukishige
    Department of Neurosurgery, Sasebo City General Hospital, Sasebo, Nagasaki, Japan
  • Shirakawa Kiyoshi
    Department of Neurosurgery, Sasebo City General Hospital, Sasebo, Nagasaki, Japan
  • Iwanaga Mitsuto
    Department of Neurosurgery, Sasebo City General Hospital, Sasebo, Nagasaki, Japan

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<p>Objective: Rupture of blood blister-like aneurysm (BBA) of the internal carotid artery (ICA) may result in fatal subarachnoid hemorrhage (SAH). Open surgery including bypass surgery has been performed to treat the aneurysm. Recently, endovascular treatment is developing for the treatment of cerebral aneurysm. Here, we report a case of ruptured BBA of the ICA, treated by endovascular trapping and review the literatures.</p><p>Case Presentation: A 37-year-old woman was brought to our hospital to treat SAH. Computed tomography (CT) angiography showed no apparent cause of the hemorrhage except for the minor dilation of the C2 portion of the left ICA. After 3 days, the CT angiography demonstrated progression of the dilation with the formation of a bleb. Evaluating collateral circulation through anterior communicating artery, endovascular trapping of the ICA was performed. Although she suffered minor ischemic stroke postoperatively, the symptoms recovered completely and discharged without neurological deficit.</p><p>Review of Literatures: we reviewed the 11 cases of ruptured BBA treated by endovascular trapping. The results of ICA occlusion based on the evaluation of collateral circulation were satisfactory because rebleeding as well as regrowth of the aneurysm were prevented. However, hemodynamic compromise and treatment for vasospasm following SAH are considered.</p><p>Conclusion: Rebleeding from BBA of the ICA should be prevented first and ischemic complication is avoided secondary. Endovascular trapping following evaluation of the collateral circulation is definitive treatment of BBA of the ICA.</p>

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