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Japanese

A CASE OF DEPOSITION OF SILVER PARTICLES IN THE NASAL AND NASOPHARYNGEAL MUCOUS MEMBRANE Eiji Yumoto 1 pp.985-989
Published Date 1978/11/20
DOI https://doi.org/10.11477/mf.1492208824
  • Abstract
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 A rare case with black discoloration of the mucosa of the nasal cavity and nasopharynx was reported. The patient, 64-year-old male, complained of persistent nasal obstruction and serous rhinorrhea, which were improved by the correction of the nasal septal deflection.

 The light- and electron-microscopic study and x-ray microanalysis of the nasal mucosa revealed ; 1) degeneration of epithelial cells and metaplasia into squamous epithelium from ciliated columnar epithelium and 2) deposition of silver particles in the lamina propria and tela submucosa with marked increase of collagen fibers. The authors concluded that the deposition of silver particles caused by nebulization of silver-protein for a long time resulted in black discoloration of mucous membrane of the nasal cavity and nasopharynx.


Copyright © 1978, 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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