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pp.271-274
Published Date 1954/6/20
DOI https://doi.org/10.11477/mf.1492201140

 SAKAGUCHI states that evidences that point towards favoring influences that are external as the cause of abnormality with which sigmoid sinuses are found relative to the mastoid cells are strong. Out of 260 mastoidectomies performed 57 cases of positional abnormality were encountered. As to thedegree in the angle, which is formed by the posterior wall of osseous canal and the surface of mastoid bone, for possible criteria in prognosticating the abnormality, there appeared to be no ground of proof.


Copyright © 1954, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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