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I.はじめに
破裂動脈瘤の自然経過で再破裂せずに増大し巨大動脈瘤を形成することは稀である1).今回われわれは,破裂前交通動脈瘤に対しクリッピング術を行い,18年後に巨大血栓化動脈瘤を生じた症例を経験した.手術所見の詳細と動脈瘤頸部クリッピング術後の長期経過観察の必要性について報告する.
A 64-year-old man, who had undergone clipping surgery 18 years before for a ruptured anterior com- municating artery (ACoA) aneurysm, presented with mild aphasia. A computerized tomography (CT) scan showed a subcortical hemorrhage in the left temporal lobe, and a high density large mass at the ACoA. Neuro-imaging study revealed a giant thrombosed ACoA aneurysm. Thrombectomy and neck clipping were successfully performed, using the interhemispheric approach. The patient was discharged without additional neurological deficits. A long-term follow-up study is thus considered necessary after neck clip- ping of a ruptured aneurysm.
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