cholesteatoma pathogenesis: remember any causes for retraction pockets? what are the risk factors? - serous otitis media (OME) is the most important risk factor for retraction pocket in the TM. see http://archotol.jamanetwork.com/article.aspx?volume=118=12=1298
Ear, Nose & Throat Medical Anatomy Poster - 24" x 36" Laminated Quick Reference
Eustachian tube dysfunction (ETD) is classically described as a functional or structural obstruction of the eustachian tube. The eustachian tube does not open or close properly in response to pressure changes within the middle ear or outside the ear.