Transcanal Endoscopic Approach to the Sinus Tympani

Abstract

The transcanal endoscopic approach to the ST is indicated in ST of Types A and B. In ST of Type C, it is not always possible to have good control of the ST; in these cases, a posterior retrofacial approach is suggested.

Endoscopic vs Microscopic Approach in Stapes Surgery: Advantages in the Middle Ear Structures Visualization and Trainee's Point of View

“…Similarly, the number of papers reporting the advantages of endoscopic middle ear visualization has also been increasing in the last years [6][7][8][9] . Despite improvements, especially in terms of lighting and magnification, microscopes have defined lines of sight and are constrained by the anatomy of the external auditory canal leading to areas within the surgical field that are difficult, if not impossible, to visualize [9][10][11][12] . With endoscopes, the line of sight can be moved closer to the surgical field, allowing more complete surveillance.…”

Sinus Tympani y recidiva en cirugía de colesteatoma

“…En los casos de ST tipo A o B se ha sugerido un abordaje endoscópico transcanal ya que se esperaría lograr una exposición adecuada de su borde medial, a diferencia los ST tipo C en el cual no es posible descartar totalmente la presencia de enfermedad residual por lo que se recomienda un abordaje transmastoideo retrofacial 2,16 . La principal limitación en relación a los trabajos publicados de cirugía endoscópica es el corto periodo de seguimiento y el número de pacientes limitados.…”

“…El ST se encuentra en una posición medial a la eminencia piramidal, el músculo del estribo y el nervio facial, y lateral al canal semicircular posterior y al vestíbulo. Está compuesto por 2 áreas: el retrotímpano superior representado por el ST y el retrotímpano inferior por el seno subtimpánico 2 .…”

Transcanal Endoscopic Ear Surgery for Congenital Cholesteatoma: A Preliminary Report

“…The facial recess can be explored easily using an endoscope with an angle view without curetting or drilling the surrounding structure around the facial nerve [7,11]. These advantages of TEES not only reduce the risk of complications, but also guarantee a satisfying outcome.…”