Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/326739
Type: Artigo
Title: A 3-d Analysis Of The Protympanum In Human Temporal Bones With Chronic Ear Disease
Author: Pauna
Henrique F.; Monsanto
Rafael C.; Schachern
Patricia; Paparella
Michael M.; Cureoglu
Sebahattin
Abstract: Eustachian tube dysfunction is believed to be an important factor to cholesteatoma development and recurrence of disease after surgical treatment. Although many studies have described prognostic factors, evaluation methods, or surgical techniques for Eustachian tube dysfunction, they relied on the soft tissues of its structure; little is known about its bony structure-the protympanum-which connects the Eustachian tube to the tympanic cavity, and can also be affected by several inflammatory conditions, both from the middle ear or from the nasopharynx. We studied temporal bones from patients with cholesteatoma, chronic otitis media (with and without retraction pockets), purulent otitis media, and non-diseased ears, looking for differences between the volume of the protympanum, the diameter of the Eustachian tube isthmus, and the distance between the anterior tympanic annulus and the promontory. Light microscopy and 3-D reconstruction software were used for the measurements. We observed a decrease of volume in the lumen of the four middle ear diseased ears compared to the control group. We observed a significant decrease in the volume of the protympanic space in the cholesteatoma group compared to the chronic otitis media group. We also observed a decrease in the bony space (protympanum space) in cholesteatoma, chronic otitis media with retraction pockets, and purulent otitis media compared to the control group. We found a correlation in middle ear diseases and a decrease in the middle ear space. Our findings may suggest that a smaller bony volume in the protympanic area may trigger middle ear dysventilation problems.
Subject: Middle Ear Disease
Protympanum
Eustachian Tube
Otitis Media
Retraction Pockets
Cholesteatoma
Editor: Springer
New York
Rights: fechado
Identifier DOI: 10.1007/s00405-016-4396-4
Address: https://link-springer-com.ez88.periodicos.capes.gov.br/article/10.1007%2Fs00405-016-4396-4
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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