Cholesteatoma and Anterior Tympanotomy

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Sprache: Englisch

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Beschreibung

Acquired aural cholesteatoma poses a unique procedural dilemma with regard to pathogenetic research and theory building. Because cholesteatoma spontane ously occurs only in the poorly pneumatized human ear, its pathogenesis is specific to humans. Nonetheless, because of the ethical questions surrounding human experimentation, pathogenetic study has almost exclusively involved nonhuman subjects. Indeed, attempts have failed in almost all animal expe riments except with the gerbil, and even here experimental designs have been improbable compared with human cholesteatoma. Cholesteatoma in the gerbil is useful, therefore, only for the study of pathology and not for human pathogenesis. I hold that the pathogenesis of cholesteatoma will be understood by studying the cholesteatomatous ear, that is, the malpneumatized ear of the human. The anatomical difference between the normal and malpneumatized ear is a probable cause of cholesteatoma. This difference may be found clinically in facial nerve decompression and cholesteatoma surgery, as, for example, facial nerve palsy occurs usually in the normal, well-pneumatized ear. Of course, conventional animal experimentation will not confirm this clinical difference since there is no ideal animal model for the poorly pneumatized human ear. Present surgical techniques for cholesteatoma vary greatly according to indi vidual otosurgeon's opinion. The most extreme difference of opinion is focused on whether to remove the external ear canal wall. Normally, the best option would be not to remove the canal wall if cholesteatoma recurrence can be prevented. Simply put, recurrence of cholesteatoma comes about when its cause has not been removed during primary surgery.

Zusammenfassung

This book contains a new surgical technique for treatment of cholesteatoma developed by the author. It clearly states procedures, with many illustrations, to elucidate techniques for successful cholesteatoma operation. This title will be a valuable source to all those in the fields of otorhinolaryngology and audiology, and to surgeons and researchers concerned with cholesteatoma.

Inhaltsverzeichnis

1. Introduction.- References.- 2. Anatomical Studies.- 2.1 Normal Adult Temporal Bone.- 2.2 Embryonal Temporal Bone.- 2.3 Temporal Bone in Neonates and Children.- 2.4 Fine Structure of Mucosal Folds and Mucosa.- 2.5 Developmental Processes of the Supratubal Recess.- References.- 3. Anterior Tympanotomy: A Surgical Technique for Cholesteatoma.- 3.1 Historical Considerations and Naming of Anterior Tympanotomy.- 3.2 Surgical Technique in Anterior Tympanotomy Using the Canal-Up Method.- References.- 4. Clinical Results of Anterior Tympanotomy in Surgery for Cholesteatoma.- 4.1 Recurrent and Residual Cholesteatoma.- 4.2 Comparative Postoperative Effects on Hearing After Anterior Tympanotomy or After Other Surgical Procedures for Cholesteatoma.- References.- 5. Surgical Findings of Anterior Tympanotomy in the Cholesteatomatous Ear.- 5.1 Attic Cholesteatoma.- 5.2 Adhesive Cholesteatoma.- 5.3 Pathological Development of the Supratubal Recess.- 6. Computed Tomography of the Cholesteatomatous Ear.- 6.1 Computed Tomographic Scan of Normal Temporal Bone.- 6.2 Computed Tomographic Scan of Attic Cholesteatoma.- 6.3 Illustration of Bony Partitions in Attic Cholesteatoma.- 6.4 Computed Tomographic Scan of Adhesive Cholesteatoma.- 6.5 Illustrations of Types of Bony Partitions in Adhesive Cholesteatoma.- 7. Pathogenesis of Cholesteatoma.- 7.1 Negative Pressure in the Epitympanum Caused by an Osseous Tympanic Diaphragm.- 7.2 Pneumatization in Cholesteatoma and in Other Diseases of the Middle Ear.- 7.3 Developmental Processes of Attic Cholesteatoma.- 7.4 Developmental Processes of Adhesive Cholesteatoma.- References.

Erscheinungsjahr:	2012
Fachbereich:	Andere Fachgebiete
Genre:	Importe , Medizin
Rubrik:	Wissenschaften
Medium:	Taschenbuch
Inhalt:	xii 114 S.
ISBN-13:	9784431684411
ISBN-10:	4431684417
Sprache:	Englisch
Einband:	Kartoniert / Broschiert
Autor:	Morimitsu, Tamotsu
Auflage:	Softcover reprint of the original 1st edition 1997
Hersteller:	Springer Japan Springer Japan KK
Verantwortliche Person für die EU:	Springer Verlag GmbH, Tiergartenstr. 17, D-69121 Heidelberg, juergen.hartmann@springer.com
Maße:	235 x 155 x 8 mm
Von/Mit:	Tamotsu Morimitsu
Erscheinungsdatum:	12.02.2012
Gewicht:	0,207 kg

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