Secretory otitis media (SOM) is one of the causes of permanent hearing loss. The key factor in the pathogenesis of the SOM is a chronic under-atmospheric middle ear (ME) pressure, which is assigned mainly to an altered ME gas exchange in combination to an impaired Eustachian tube (ET) function. Recent research pointed to the importance of the mastoid in the ME pressure balance related to ambien...

The current study presents volumetric reconstruction of the tympanic cavity obtained from micro-CT scans which pixel size was 18 μm. Thanks to this, osseous components of the tympanic cavity were shown in high optical resolution, causing that their morphological appearance was clearly demonstrated. Particular attention was paid on imaging the medial wall of the tympanic cavity, because its stru...

The middle ear pressure variation is one of the most important factors that causes discomfort on flight passengers and crew. The purpose of this work is to develop a mathematical model of the middle ear cavity pressure variation during typical flight’s conditions. The middle ear cavity was modeled as a gas chamber that transfer gas to other physiological systems trough three different ways. One...

OBJECTIVE To provide a detailed anatomic description of middle ear endoscopy via different approaches. METHOD Using 0, 30 and 90 degree rigid endoscopes, 6 dry temporal bones and 11 temporal bone blocks were examined to define the average range of view obtained by three approaches: 1. via the external ear canal approach; 2. via a retroauricular incision: including two subdivided routes, the m...

A 40-year-old male presented with a cholesterol granuloma of the petrous apex manifesting as progressive hearing loss and tinnitus. The lesion was treated via an extradural middle cranial fossa approach employing a new procedure to establish a drainage pathway into the superior tympanic cavity which preserved his hearing. The pathway was formed by a groove 5 mm wide and deep in the anterolatera...

OBJECTIVE To assess middle ear aeration after total mastoid obliteration using bone pate and hydroxyapatite performed at the second stage of intact-canal-wall (ICW) tympanoplasty. STUDY DESIGN Retrospective study. SETTING Tertiary referral hospital. PATIENTS Forty-two ears with cholesteatoma underwent the obliteration. Computed tomography (CT) scan 1 week before the second-stage operation...

UNLABELLED The knowledge of the relations between the noble and vital structures of temporal bone is still a great challenge for the otologic surgeon. The microscopic anatomic studies of the temporal bone are one of the greatest help to prevent lesions during surgical intervention. AIM To study the anatomic correlations between the carotid canal and the cochlea, and the occurrence of dehiscen...

We used a surgical procedure suggested by Murata et al. and inserted a T-silicon plate from the tympanic cavity into the opening of the eustachian tube in 2 cases of chronic otitis media. The goal of this surgery was to promote the regeneration and the epithelization of residual mucosa of the eustachian tube. In our results, epitheliums of regenerated tympanic mucosa were histologically examine...

OBJECTIVES To shed light on the endoscopic anatomy of the middle ear seen on 2-port endoscopy and to describe potential clinical applications. DESIGN Anatomical structures were visualized by transmeatal or transtympanic rigid scopes of different angles and by a flexible scope in the eustachian tube. This arrangement ensured reciprocal guidance of the scopes and provided access to regions not ...