Persistent Primitive Olfactory Arteryの5例

Persistent Primitive Olfactory Artery : report of 5 cases

I．はじめに

　前大脳動脈の走行異常であるpersistent primi-tive olfactory arteryの5症例を経験した．この血管奇形は非常に稀で報告例は少ない．既報のものを加え，文献的考察をし，その臨床的特徴を報告する．

Five cases of a persistent primitive olfactory artery are reported. The anomalous artery coursed antero-medially along the ipsilateral olfactory nerve and made a hairpin turn, supplying the circulation of theanterior cerebral artery. It was proposed that a primitive embryonic olfactory artery had remained as thisartery. A cerebral aneurysm was located at the hairpin curve of the artery. Hemodynamic stress is consi-dered to have an important role in aneurysm formation. Any aneurysm occurring at an artery should beconsidered for surgical treatment.