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Type: Artigo
Title: Epitympanum Volume And Tympanic Isthmus Area In Temporal Bones With Retraction Pockets
Author: Monsanto
Rafael da Costa; Pauna
Henrique Furlan; Kaya
Serdar; Hizli
Omer; Kwon
Geeyoun; Paparella
Michael M.; Cureoglu
Abstract: To compare the volume of the epitympanic space, as well as the area of the tympanic isthmus, in human temporal bones with retraction pockets to those with chronic otitis media without retraction pockets and to those with neither condition. Study DesignComparative human temporal bone study. MethodsWe generated a three-dimensional model of the bony epitympanum and measured the epitympanic space. We also compared the area of the tympanic isthmus. ResultsThe mean total volume of the epitympanum was 40.55 7.14 mm(3) in the retraction pocket group, 50.03 8.49 mm(3) in the chronic otitis media group, and 48.03 +/- 9.16 mm(3) in the neither condition group. The mean volume of the anterior, lateral, and medial compartments in temporal bones in the retraction pocket group was significantly smaller than in the two control groups (P < 0.05). Total epitympanic volume was also significantly smaller in the retraction pocket group than in both control groups (P < 0.05). The mean area of the tympanic isthmus was significantly smaller in the retraction pocket group (8.11 +/- 2.44 mm(2)) than in the chronic otitis media group (9.82 +/- 2.06 mm(2)) or the neither condition group (10.66 +/- 1.78 mm(2)) (P < 0.05). ConclusionOur data indicate that temporal bones with retraction pockets have a smaller volume bony epitympanum and a smaller tympanic isthmus area as compared with temporal bones from both control groups. The smaller volume tympanic isthmus in the retraction pocket group may suggest that a blockage in the aeration pathways to the epitympanum could create dysventilation, resulting in negative pressure and ultimately in retraction pockets and cholesteatomas. Level of EvidenceNA Laryngoscope, 126:E369-E374, 2016
Subject: Epitympanum
Tympanic Isthmus
Human Temporal Bone
Retraction Pockets
Middle Ear Ventilation
3d Reconstruction
Editor: Wiley-Blackwell
Citation: Laryngoscope. Wiley-blackwell, v. 126, p. E369 - E374, 2016.
Rights: fechado
Identifier DOI: 10.1002/lary.25937
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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