Rupture of the internal carotid artery pseudoaneurysm resulting from fungal sinusitis.

Although vasculitis due to infection with fungi, including Aspergillus, causes aneurysm formation, reports of internal carotid artery aneurysm formation resulting from fungal sinusitis are few. We report on a patient who experienced massive epistaxis from rupture of an internal carotid artery pseudoaneurysm, caused by fungal sinusitis. We treated the aneurysm with endovascular coil embolization, followed by endoscopic sinus surgery to remove the fungal mass. Intraoperative findings included a torn internal carotid artery and exposure of the coil to the sinus. Performing endoscopic sinus surgery before the embolization procedure would have increased the risks of massive intraoperative bleeding and mortality. Even after achieving hemostasis, serious sequelae, such as cerebral infarction, might occur. In this type of case, otorhinolaryngologists and neurosurgeons should collaborate, and an aneurysm should be treated before endoscopic sinus surgery. Although the treatment strategy for fungal internal carotid artery aneurysms is controversial, this case suggested the use of the embolization procedure followed by endoscopic debridement and antifungal therapy to treat a pseudoaneurysm of the internal carotid artery caused by fungal sinusitis.

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