Middle cerebral artery dissecting aneurysm causing intracerebral hemorrhage 4 years after the non-hemorrhagic onset: a case report |
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Authors: | Isono Mitsuo Abe Tatsuya Goda Makoto Ishii Keisuke Kobayashi Hidenori |
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Institution: | Department of Neurosurgery, Oita Medical University, Oita, Japan. |
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Abstract: | BACKGROUND: We report a case of dissecting middle cerebral artery (MCA) aneurysm causing intracerebral hemorrhage 4 years after the non-hemorrhagic onset. CASE DESCRIPTION: A 30-year-old male was diagnosed with an unruptured dissecting MCA aneurysm after a severe pulsating headache in August 1993. Angiography revealed dilatation of the distal portion of the temporo-occipital artery. During 2 years of follow-up, there were no significant changes on magnetic resonance imaging. In August 1997, he became comatose because of massive intracerebral hemorrhage caused by a dilated fusiform dissecting aneurysm. Emergency surgery and postoperative mild hypothermia resulted in full recovery. CONCLUSION: To date only 30 cases of dissecting MCA aneurysm have been reported and for unruptured aneurysms, surgical intervention was not chosen. However, the present case strongly suggests that long-term follow-up is necessary in patients with unruptured dissecting aneurysms of the anterior circulation, especially those with ectatic components. |
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