Aneurysm of the Distal Posterior Inferior Cerebellar Artery with Intraventricular Hemorrhage: A Case Report

概要

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A 30-year-old woman presented with the sudden onset of severe headache, nausea, and vomiting. On admission the patient was alert and results of a neurologic examination were normal. A computed tomogram of the brain revealed the presence of Intraventricular hemorrhage, predominantly in the fourth ventricle, and hydrocephalus. However, subarachnoid blood was not seen in the basal cistern. A third cerebral angiogram performed on the 13th day after admission showed a saccular aneurysm arising from the telovelotonsillar segment of the posterior inferior cerebellar artery. Six days later, a bilateral suboccipital craniectomy was performed, and the neck of the aneurysm was clipped. We believe that demonstration of an isolated fourth ventricular hemorrhage should raise a strong suspicion of a distal posterior inferior cerebellar artery aneurysm.
昭和大学・昭和医学会の論文