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THE MEDIAL INFERIOR CEREBELLAR VEIN Toru Mine 1 1Division of Neurological Surgery, Department of Surgery, School of Medicine, Keio University pp.129-141
Published Date 1971/2/1
DOI https://doi.org/10.11477/mf.1406202853
  • Abstract
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Upon the detail anatomical analysis of 100 adult brain hemispheres, the medial inferior cerebellar vein is verified to maintatin the high percentage (86%) consistency in its configuration. The vein passes through the medial inferior aspect of the cerebellar hemisphere in the vallecula and exists bilaterally in parallel in most cases. Thus, this vein is quite susceptive of the pressure unbalance in the posterior fossa. Roentgenologically, the medial inferior cerebellar vein is clearly demon-strated in 83% of this series. The tonsillar branches, the tonsillo-vermian point (the conflux of tonsillar branches and biventric branch) and the main venous stem of this vein maintain high consistency in location, configuration and distribution on X-ray films. Statistic analysis in this series revealed the following results.

I) A-P view

1) The average distance between the midline and the tonsillo-vermian point is 5. 3 mm (δ : 1. 6).

2) The average distance between the midline and the main venous stem is 2.4 mm (δ : 1. 7).

3) The average distance between the midline and the most medial point of the superior tonsillar branch is 2. 5 mm (δ : 0.9).

4) The average distance between the midline and the most lateral point of the superior tonsillar branch is 10. 5 mm (δ : 2. 0).

II) Lateral view

1) The average distance between the most posterior edge of the clivus and the tonsillo- vermian point is 42. 3 mm (δ : 2. 9).

2) The average distance between the inner- table of the posterior fossa calvarium and thetonsillo-vermian point is 10. 5 mm (δ : 2. 6).

The above measured standard value can be utilized to evaluate the deviation and the change of con-figuration of the medial inferior cerebellar vein due to the posterior fossa space occupying lesion in conclusion. The author will refer the clinical and roentgenological aspects of the medial inferior cerebellar vein in next paper.


Copyright © 1971, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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