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MEDIAL INFERIOR CEREBELLAR VEIN (2nd part):CLINICAL STUDY Toru Mine 1 1Divisions of Neurological Surgery, Department of Surgery, School of Medicine, Keio University pp.639-649
Published Date 1971/6/1
DOI https://doi.org/10.11477/mf.1406202913
  • Abstract
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The configuration and the course of the medial inferior cerebellar vein are influenced by the various space taking lesions in the posterior fossa, and this vein suggests the changes of the anatomical struc-ture of the medial inferior aspect of the cerebellum.

1) Lesions in cerebellar hemisphere : In a-p view, the stem of the ipsilateral medial inferior cerebellar vein deviates towards medially and a regular lateral concave curve shows straightening and unrolling. The lateral view is not cotributory for diagnosis except for mild elongation of the vein.

2) Lesions in medial inferior part of the cere-bellum : In a-p view, the stem shows elongation and the regular lateral concave curve shows straight-ening, though no medial displacement is observed generally. In lateral view, the stem shows definite posterior inferior suppression specifically, namely elongation or straightening of the stem is observed. The tonsillo-vermian point also is displaced down-wards.

3) Cerebello-tonsilar herniation : The tonsillo-vermian point is displaced posteriorly and inferiorly together with medial suppression. The superior and the inferior tonsilar branches of this vein are depressed downwards, elongated and medially dis-placed. The inferior tonsilar branch becomes almost straight by medial suppression in a-p view.

In conclusion, the angiographical evaluation of the course of the medial inferior cerebellar wein is significant in diagnosis of the space occupying lesionin the posterior fossa, especially in the posterior inferior part of the cerebellum. In the topographical diagnosis of the posterior fossa space occupying lesions, the medial inferior cerebellar vein together with the precentral cerebellar vein and the posterior inferior cerebellar artery have a significant diagnostic value, and the detailed evaluation of the above angiographical pictures gives an adequate evaluation of the posterior fossa space occupying lesion.


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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