Evidence map›Paper›PMID 41310237›Full record

ArticleNeuroradiology2026

Considerations on the morphological variability of the posterior inferior cerebellar artery origin.

George Triantafyllou, Panagiotis Papadopoulos-Manolarakis, Nikolaos-Achilleas Arkoudis, Georgios Velonakis, Alexandros Samolis, Łukasz Olewnik, Ingrid C Landfald, Maria Piagkou

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Article in Neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

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3citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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3 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

George TriantafyllouDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece.
Panagiotis Papadopoulos-ManolarakisDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece.
Nikolaos-Achilleas ArkoudisResearch Unit of Radiology and Medical Imaging, National and Kapodistrian University of Athens, Athens, Greece.
Georgios VelonakisResearch Unit of Radiology and Medical Imaging, National and Kapodistrian University of Athens, Athens, Greece.
Alexandros SamolisDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece.
Łukasz Olewnik"VARIANTIS" Research Laboratory, Department of Clinical Anatomy, Mazovian Academy in Plock, Płock, Poland.
Ingrid C Landfald"VARIANTIS" Research Laboratory, Department of Clinical Anatomy, Mazovian Academy in Plock, Płock, Poland.
Maria PiagkouDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece. mapian@med.uoa.gr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the morphological variability of the posterior inferior cerebellar artery (PICA) origin utilizing computed tomography angiography (CTA) within a substantial adult cohort, and to establish a refined, clinically pertinent classification system for neuroradiologists and neurosurgeons. MATERIALS AND

methodsA retrospective review of 500 CTA brain scans, comprising 1,000 arteries, was undertaken. The origin, pathway, and morphological variants of the PICA were systematically documented and classified according to segmental origin and anatomical characteristics.

resultsThe PICA most commonly originates from the intradural (V4) segment of the vertebral artery (VA) (63.4%), followed by the extradural (V3) segment (16.4%) and the basilar artery (BA) (15.8%). Bilateral origins from the same segment were seen in 41.6% (V4), 4.4% (V3), and 3.2% (BA). The absence of PICA was found in 4.4% of cases. In these cases, the contralateral PICA was enlarged and compensated for the absent artery. Rare variants included duplicate origin (0.1%), duplication (0.3%), VA terminating in PICA (PICA-VA) (3.4%), and intradural origin with an abnormal course below the foramen magnum (1.2%).

conclusionThis study provides a thorough radiological classification of the origin and morphology of the PICA, offering significant insights into preoperative planning, endovascular access planning, and neurovascular risk assessment. Recognizing these anatomical variations is crucial for enhancing diagnostic accuracy, surgical safety, and interventional strategies. Future multicenter investigations are recommended to validate and further develop this classification system.

Indexed as

Basilar ArteryCerebellumCerebral AngiographyComputed Tomography AngiographyVertebral ArteryAdultAgedAged, 80 and overAnatomic VariationFemaleHumansMaleMiddle AgedRetrospective StudiesAnatomyMorphologyNeuroradiologyPosterior inferior cerebellar arteryVariation

Identifiers

PMID41310237

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