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Case Reports
. 2004 Mar;25(3):425-7.

Double origin of the posterior inferior cerebellar artery

Walter S Lesley  1 , Henry J Dalsania
Affiliations
Case Reports

Double origin of the posterior inferior cerebellar artery

Walter S Lesley et al. AJNR Am J Neuroradiol. 2004 Mar.

Abstract

Double origin of the posterior inferior cerebellar artery (PICA) has rarely been demonstrated by angiography in the peer-reviewed literature. Of the three previous reports, this PICA variant arose from the left vertebral artery. We report a right-sided, double-origin PICA.

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Figures

F<sc>ig</sc> 1.
Fig 1.
Double origin of the right PICA. Angiograms of the right VA show two separate and distinct PICA vessels (black arrows) arising from the V4 segment. They unite at the midportion of the anterior medullary segment of the PICA (white arrows). The vertebrobasilar junction (asterisk) is opacified at the convergence of the hypoplastic right and the dominant left V5 segments. A, Lateral projection. B, Frontal projection C, For comparison, the right V5 segment (arrow) is seen filling retrograde on the frontal projection angiogram of the left VA. The left PICA, basilar, and bilateral anterior inferior cerebellar arteries are normal.
See this image and copyright information in PMC

References

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