Abstract
Recent studies (Alaou-Ismaili et al. 2020; Kilic et al. Eur J Radiol 56:212–219, 2005) among experienced sub-specialized neurosurgeons described divergent perceptions of surgical risk for venous sacrifice in posterior fossa surgery. Three galenic veins stood out as controversial in venous risk assessment and underexplored in the literature: the internal occipital vein (IOV), the precentral cerebellar vein (PCV), and the superior vermian vein (SVV). We have conducted a narrative review based on a systematic literature search to analyze terminology and anatomic descriptions and to suggest a coherent synthesis of published data on these veins. A systematic PubMed literature search was carried out using the keywords: “posterior fossa,” “venous anatomy,” and “radiology.” Relevant radiological, microsurgical, and anatomical articles were selected if they described the anatomy of the three veins. Anatomical descriptions were analyzed with hermeneutic methodology alongside the articles’ radiological and anatomical dissection pictures. New illustrations were created to depict the synthesized image of the venous anatomy. A total of 13 articles described the anatomy and terminology of the relevant veins. The descriptions of the IOV included smaller non-occipital vessels that confused the identification of the vessel. IOV is analyzed to be the vein draining the primary visual cortex, which drains into the vein of Galen (VG). The PCV and SVV enter the VG from below and are fused in almost half of all studied patients, creating a third vessel by the name of the superior cerebellar vein. A conscientious narrative review and hermeneutic analysis produced a synthesized, uniform picture of terminology and anatomy. Consensus on anatomical descriptions and definitions are indispensable for validation of anatomy, research into anatomical variation, for surgical planning and documentation.
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This particular research was only economically backed from The Reseacch Fund of Rigshospitalet through a part-time research scholarship granted for the corresponding author.
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Anatomical analysis and synthesis: M. Krogager and B. Jespersen. Manuscript writing and editing: M. Krogager, G. Benndorf, and T. Mathiesen. Novel anatomical illustrations: B. Jespersen and M. Krogager.
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Krogager, M.E., Jespersen, B., Mathiesen, T.I. et al. Three underdogs among galenic veins: anatomical analysis and literature review of surgical relevant veins in the quadrigeminal cistern. Neurosurg Rev 45, 3245–3258 (2022). https://doi.org/10.1007/s10143-022-01842-z
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DOI: https://doi.org/10.1007/s10143-022-01842-z