The Role of Retraction Pockets in Cholesteatoma Development: An Ultrastructural Study

Persistent retraction pockets causes erosion by adhering to ossicles and other structures of the middle ear. These are characterized by lysis of fibrous layer. Being in contact the squamous epithelium and the middle ear mucosa, it comprises the precursor mechanism of cholesteatoma. The present study...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Ear, nose, & throat journal nose, & throat journal, 1993-03, Vol.72 (3), p.210-212
Hauptverfasser:	Akyildiz, Necmettin, Akbay, Canan, Özgïrgïn, O. Nuri, Bayramoglu, Ïsmet, Sayin, Nursen
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Cholesteatoma - etiology Ear Diseases - physiopathology Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology Ear, Middle - physiopathology Epithelium - physiopathology Epithelium - ultrastructure Eustachian Tube - physiopathology Female Humans Male Medical sciences Otorhinolaryngology. Stomatology Tumors Tympanic Membrane - physiopathology Tympanic Membrane - surgery
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Persistent retraction pockets causes erosion by adhering to ossicles and other structures of the middle ear. These are characterized by lysis of fibrous layer. Being in contact the squamous epithelium and the middle ear mucosa, it comprises the precursor mechanism of cholesteatoma. The present study discards the classical theories assuming epithelial migration through marginal or attic perforation; and demonstrates that these secondarily develop as a result of cholesteatoma. Retraction pocket specimens obtained from 10 cases of adhesive otitis media were examined with light and transmission electron microscopy and the presence of papillary ingrowth of the squamous epithelium was demonstrated.
ISSN:	0145-5613 1942-7522
DOI:	10.1177/014556139307200307