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I.はじめに
脳動静脈奇形(arteriovenous malformation,以下AVMと略す)の自然消失例の報告は,Hook, Johansonら(1958)1)により初めてなされて以来,これまでに文献上20例2,3,5,7-9,12-15,17-19,22,23,29)にすぎない.
今回著者らも,脳内出血で発症し,これまでの報告とは異なり極めて短期間でAVMが脳血管造影(以下AGと略す)上消失し,かつ手術によりAVMの血栓化が確認された症例を経験したので,これまでの報告例と合わせて文献的考察を加えて報告する.
The authors report a case of spontaneous occlusion of an arterioveuous malformation (AVM) verified by the second angiography performed 3 days after the ini-tial one. This 65-year-old man had a sudden attack of headache, nausea, and vomiting and was admitted to our hospital next day. On admission, CT scan showed subcortical hemorrhage in the right temporo-parietal area and right CAG showed a small AVM in the same area. The main feeder was a MCA distal branch and the drainer joined Labbe's vein. Repeated angio-graphy 3 days after initial one failed to demonstrate the AVM.
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