Persistent primitive olfactory artery associated with accessory middle cerebral artery and partially duplicated anterior communicating artery.

IF 1.4 4区医学 Q2 Medicine Surgical and Radiologic Anatomy Pub Date : 2025-03-17 DOI:10.1007/s00276-025-03594-z

Hideki Endo, Hidetoshi Ono, Yuki Ishida, Hirohiko Nakamura

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引用次数: 0

Abstract

Purpose: Although anatomical variations in the anterior cerebral artery (ACA), anterior communicating artery (ACoA) complex, and/or middle cerebral artery (MCA) are common, their combination is rare. Persistent primitive olfactory artery (PPOA) is a rare variant of the proximal ACA that has a hairpin curve associated with cerebral aneurysms. To our knowledge, there are no previous reports of PPOA associated with accessory MCA and partially duplicated ACoA.

Methods: We report a case of PPOA with a suspected aneurysm at the hairpin curve associated with accessory MCA and partially duplicated ACoA, diagnosed by 1.5-Tesla magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA).

Results: A 46-year-old woman visited our hospital for screening examinations for cerebrovascular disease. MRA showed hairpin curves in the proximal portions of the bilateral ACAs, which we considered to be bilateral PPOAs (type 1). MRA three-dimensional volume rendering images revealed a small bulge, a suspected aneurysm, at the left hairpin curve. MRI/MRA showed that the left accessory MCA originated just proximal to the bulge in the hairpin curve. A partial duplication of the ACoA was also observed. We plan to follow up on the bulge in the hairpin curve because of the increased risk of aneurysm formation.

Conclusion: Careful imaging assessment is important to identify rare anatomical variations. MRA three-dimensional volume rendering images provided a better understanding of the vascular structure, including the presence of a small bulge suspected to be an aneurysm. In our case, accessory MCA was considered to enhance local hemodynamic stress at the hairpin curve.

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来源期刊

Surgical and Radiologic Anatomy Medicine-Pathology and Forensic Medicine

CiteScore

2.40

自引率

14.30%

发文量

期刊介绍： Anatomy is a morphological science which cannot fail to interest the clinician. The practical application of anatomical research to clinical problems necessitates special adaptation and selectivity in choosing from numerous international works. Although there is a tendency to believe that meaningful advances in anatomy are unlikely, constant revision is necessary. Surgical and Radiologic Anatomy, the first international journal of Clinical anatomy has been created in this spirit. Its goal is to serve clinicians, regardless of speciality-physicians, surgeons, radiologists or other specialists-as an indispensable aid with which they can improve their knowledge of anatomy. Each issue includes: Original papers, review articles, articles on the anatomical bases of medical, surgical and radiological techniques, articles of normal radiologic anatomy, brief reviews of anatomical publications of clinical interest. Particular attention is given to high quality illustrations, which are indispensable for a better understanding of anatomical problems. Surgical and Radiologic Anatomy is a journal written by anatomists for clinicians with a special interest in anatomy.