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pp.101-104
Published Date 1951/3/20
DOI https://doi.org/10.11477/mf.1492200468

NIHO and his associates report a method by whic-h a fragmented piece of petrous bone which was ac-cidently caused during the procedure of operation is successfully removed. A radical mastoidectomy is p-erform ed on the left ear of a girl aged 6 who w-as affedted with chronic running ear since the time of the child' s early infancy. The disease foci were found in the typanum, epitympanum, pre-petrous m-astoid cells and cells of the petrous body. The tym-panum was necessarily curetted and petrosotomy w-as effected by kopetsky-Almour method. But during the course of the latter procedure a ,portion of the petrous pyramid was accidently fractured through fo-rming a severed osseous fragment. This loosened fr-agment was then removed by Niho and Hirano met-hod. The wound of operation healed with complete eqithelization within the period of 2 months.


Copyright © 1951, 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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