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Surface structures of aural polyps: a scanning electron microscopic study

Published online by Cambridge University Press:  08 March 2006

J. Skladzień ,
J. A. Litwin ,
M. Nowogrodzka-Zagórska  and
A. J. Miodoński
J. Skladzień
Affiliation:
Department of Ororhinolaryngology, Jagiellonian University School of Medicine, Kraków, Poland.
J. A. Litwin
Affiliation:
Department of Histology, Jagiellonian University School of Medicine, Kraków, Poland.
M. Nowogrodzka-Zagórska
Affiliation:
Laboratory of Scanning Electron Microscopy, Jagiellonian University School of Medicine, Kraków, Poland.
A. J. Miodoński
Affiliation:
Laboratory of Scanning Electron Microscopy, Jagiellonian University School of Medicine, Kraków, Poland.
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Abstract

Surfaces of aural polyps collected from 30 patients were examined by scanning electron microscopy. In the polyps not associated with cholesteatoma, the epithelial lining showed individually variable metaplasia towards cuboidal ‘cobblestone’-type and squamous epithelium covered with microvilli of various shapes and sizes. Squamous epithelium was present on the surface of all polyps with underlying cholesteatoma, with superficial cells possessing elongated microvilli, microplicae of different sizes, grooves and pits. Such surface structures reflect different stages of the keratinization process that seems to becharacteristic for the epithelial lining of polyps with underlying cholesteatoma. Incomplete epithelium accompanied by granulation tissue was found in several polyps; in two cholesteatoma-associated polyps plate-likecholesterol crystals were observed.

Keywords

PolypsEar, ExternalCholesteaoma, Middle EarMicroscopy Electron Scanning
Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 116 , Issue 6 , June 2002 , pp. 420 - 425
Copyright
© Royal Society of Medicine Press Limited 2002

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