Objectives/Hypothesis: To describe retrotympanic endoscopic anatomy, especially the pyramidal eminence and contiguous spaces. Study Design: This was an anatomical study on a prospective case series. Methods: The anatomy of the retrotympanum was studied by endoscopy in nine patients affected by cholesteatoma who underwent tympanomastoid surgery and in six temporal bone dissections. Results: Pneumatization of the sinus tympani and posterior tympanic sinus or both, noted in 12 ears out of 15, may give rise to a recess beneath the pyramidal eminence, which we have called the subpyramidal space. This space can manifest with a variable degree of depth, shape, or extent depending on the shape and dimensions of the pyramidal eminence. Conclusions: Endoscopic exploration of the middle ear may guarantee a very good exposure of retrotympanic structures, allowing detailed anatomical descriptions of hidden areas. Improvement in our knowledge of the anatomy may decrease the possibility of residual disease during cholesteatoma surgery. © 2009 The American Laryngological, Rhinological and Otological Society, Inc.
Pyramidal eminence and subpyramidal space: An endoscopic anatomical study / Marchioni, D.; Alicandri-Ciufelli, M.; Grammatica, A.; Mattioli, F.; Presutti, L.. - In: LARYNGOSCOPE. - ISSN 0023-852X. - 120:3(2010), pp. 557-564. [10.1002/lary.20748]
Pyramidal eminence and subpyramidal space: An endoscopic anatomical study
Marchioni D.;Alicandri-Ciufelli M.;Grammatica A.;Mattioli F.;Presutti L.
2010
Abstract
Objectives/Hypothesis: To describe retrotympanic endoscopic anatomy, especially the pyramidal eminence and contiguous spaces. Study Design: This was an anatomical study on a prospective case series. Methods: The anatomy of the retrotympanum was studied by endoscopy in nine patients affected by cholesteatoma who underwent tympanomastoid surgery and in six temporal bone dissections. Results: Pneumatization of the sinus tympani and posterior tympanic sinus or both, noted in 12 ears out of 15, may give rise to a recess beneath the pyramidal eminence, which we have called the subpyramidal space. This space can manifest with a variable degree of depth, shape, or extent depending on the shape and dimensions of the pyramidal eminence. Conclusions: Endoscopic exploration of the middle ear may guarantee a very good exposure of retrotympanic structures, allowing detailed anatomical descriptions of hidden areas. Improvement in our knowledge of the anatomy may decrease the possibility of residual disease during cholesteatoma surgery. © 2009 The American Laryngological, Rhinological and Otological Society, Inc.Pubblicazioni consigliate
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