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Extremely long posterior cerebral artery P1 segment

  • Anatomic Variations
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Surgical and Radiologic Anatomy Aims and scope Submit manuscript

Abstract

Purpose

Excluding aplasia and hypoplasia of the P1 segment of the posterior cerebral artery (PCA), anatomical variations in the PCA are rare. To our best knowledge, there are few reports of an extremely long P1 segment of the PCA.

Methods

Herein, we report a rare case of an extremely long P1 segment of the PCA, which was diagnosed by 1.5-T magnetic resonance angiography (MRA).

Results

A 96-year-old woman was transferred by ambulance to our hospital with impaired consciousness. Her symptom improved, and magnetic resonance imaging showed no significant findings. MRA revealed an extremely long P1 segment of the left PCA. The length of the P1 segment of the left PCA was 27.3 mm. The left posterior communicating artery (PCoA) was 20.9 mm, which is not considered long. The left anterior choroidal artery branched from the internal carotid artery distal to the PCoA branching position. Basilar artery fenestration was also incidentally identified.

Conclusion

Careful imaging assessment was important for identifying the extremely long P1 segment of the PCA in the present case. This rare anatomical variation can also be confirmed by 1.5-T MRA.

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Data availability

All data generated or analysed during this study are included in this published article.

Code availability

Not applicable.

Abbreviations

AChA:

Anterior choroidal artery

MRA:

Magnetic resonance angiography

PCA:

Posterior cerebral artery

PCoA:

Posterior communicating artery

References

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Acknowledgements

We are grateful to Yasuhiro Izumi (radiological technologist, Nakamura Memorial Hospital, Sapporo, Hokkaido, Japan) for his excellent work. We also thank Emily Woodhouse, PhD, from Edanz (https://jp.edanz.com/ac) for editing a draft of this manuscript.

Funding

The authors did not receive support from any organization for the submitted work.

Author information

Authors and Affiliations

  1. Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-Ku, Sapporo, Hokkaido, 060-8570, Japan

    Hideki Endo, Bunsho Asayama & Hirohiko Nakamura

  2. Department of Radiology, Nakamura Memorial Hospital, Sapporo, Hokkaido, Japan

    Hidetoshi Ono

Authors
  1. Hideki Endo
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  2. Hidetoshi Ono
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  3. Bunsho Asayama
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  4. Hirohiko Nakamura
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Contributions

Hideki Endo: protocol/project development, data collection and management, data analysis, manuscript writing/editing. Hidetoshi Ono: project development, data management, data analysis, manuscript editing. Bunsho Asayama: data collection, manuscript editing. Hirohiko Nakamura: data management, manuscript editing.

Corresponding author

Correspondence to Hideki Endo.

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Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethics Committee of Nakamura Memorial Hospital (No. 2023021001).

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Informed consent was obtained from the patient.

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The participant has consented to the submission of the case report to the journal.

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Endo, H., Ono, H., Asayama, B. et al. Extremely long posterior cerebral artery P1 segment. Surg Radiol Anat 45, 773–775 (2023). https://doi.org/10.1007/s00276-023-03137-4

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  • DOI: https://doi.org/10.1007/s00276-023-03137-4

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