Aneurysm of the A1 Segment of the Anterior Cerebral Artery Associated with the Persistent Primitive Olfactory Artery

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• 作者：Yuiko Sato¹ ; Hiroshi Kashimura¹ ; ^{h-kashimura@pref.iwate.jp" class="auth_mail" title="E-mail the corresponding author} ; Masaru Takeda¹ ; Kohei Chida¹ ; Yoshitaka Kubo² ; Kuniaki Ogasawara²
• 关键词：Anterior cerebral artery ; Olfactory artery ; Persistent primitive aneurysm
• 刊名：World Neurosurgery
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：84
• 期：6
• 页码：2079.e7-2079.e9
• 全文大小：883 K

文摘

The persistent primitive artery constitutes the anterior cerebral artery proper. When the persistent primitive artery keeps its embryologic course along the olfactory bulb, it is called the persistent primitive olfactory artery (PPOA).

Case Description

A 69-year-old man presented with an incidentally discovered unruptured aneurysm at the origin of the PPOA. The PPOA originated at the A1 segment of the anterior cerebral artery, coursed anteromedially along the olfactory tract, made a hairpin turn posterosuperior to the midline, and formed the callosomarginal branch of the anterior cerebral artery. The anomalous artery was interpreted as a PPOA (type 3). Type 3 PPOA associated with an unruptured aneurysm is rare.

Conclusions

There is a high incidence of aneurysms associated with a PPOA. Follow-up studies are necessary in the present case to monitor for the development of another aneurysm at the hairpin bend.