gms | German Medical Science

68th Annual Meeting of the German Society of Neurosurgery (DGNC)
7th Joint Meeting with the British Neurosurgical Society (SBNS)

German Society of Neurosurgery (DGNC)

14 - 17 May 2017, Magdeburg

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Bilateral duplication of superior cerebellar artery with double helix "DNA-like" morphology

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  • Angelo Tortora - Department of Neurosurgery, Heinrich-Heine-Universität , Düsseldorf, Deutschland
  • Bernd Turowski - Division of Neuroradiology, Institute of Radiology, Heinrich-Heine-Universität, Düsseldorf, Deutschland
  • Hans-Jakob Steiger - Universitätsklinikum Düsseldorf, Neurochirurgische Klinik, Düsseldorf, Deutschland

Deutsche Gesellschaft für Neurochirurgie. Society of British Neurological Surgeons. 68. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 7. Joint Meeting mit der Society of British Neurological Surgeons (SBNS). Magdeburg, 14.-17.05.2017. Düsseldorf: German Medical Science GMS Publishing House; 2017. DocP 074

doi: 10.3205/17dgnc637, urn:nbn:de:0183-17dgnc6370

Published: June 9, 2017

© 2017 Tortora et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

Text

Objective: Although SCA is the most constant vessel feeding the cerebellum, several anatomical variations are described. Origin from P1, duplications, triplications are well known alternative patterns. We report a case of bilateral duplication of the superior cerebellar artery associated with double helix morphology of the proximal S1 segment.

Methods: A 45 years old male patient underwent digital subtraction angiography to investigate the suspect of an incidental basilar tip aneurysm.

Results: A complete right vertebral dominance, usual ipsilateral pica and aica morphology as well as a left sided convexity characterized the proximal two third of the basilar artery. The left vertebral artery served terminated directly with the ipsilateral pica. Between the distal two third of the artery was noted an almost 90° change of direction of the vessel in dorsal direction. In this portion the angiogram confirmed the presence of a broad neck aneurysm with rostral projection. Distally on the posterolateral portion of the trunk originated bilaterally duplicated SCAs. Those showed “DNA-like” double helix morphology bilaterally. The basilar artery terminated with two usual P1.

Conclusion: Unusual DNA-like morphology of the SCA to our knowledge has never been described in the literature. This can´t be explained with secondary modifications of the vessel´s morphology due to hypertonia-related elongation and coiling. Variations in the formation of the dorsal carotid division represent the results of the pattern described.