Intraoperatively, a tumor was found to occupy the entire epitympanum and mesotympanum
with extension into the hypotympanum.
Aeration of the temporal bone was also evaluated by preoperative CT scan and divided into the following four categories: the mastoid air cells, the epitympanum, the mesotympanum
, and non-aerated.
In early stages, it was used to provide information regarding pathology in the epitympanum, mesotympanum
and mastoid antrum and to check the assessment of ossicular chain mobility.
Advocates of complete CWDM justify its use as it provides a good view of the mesotympanum
and sinus tympani to ensure complete expiration of the cholesteatoma and to avoid recurrence.
Computed tomography (CT) was performed, which showed a high and lateralized right jugular bulb that had a superolaterally pointing diverticulum that bulged into the lower mesotympanum
and posterior external auditory meatus (figure 2).
a colloquial keratin pearl in the anterosuperior quadrant of the mesotympanum
juxtaposed to the malleolar manubrium or in the second-most common location of posterosuperior quadrant behind an otherwise healthy appearing eardrum [32, 33].
In our study, we found soft tissue density in mesotympanum
, attic and mastoid with a sensitivity and specificity of 100%.
Endoscopes of 0, 30, and 45[degrees] were used to identify residual cholesteatoma extending from the posterior mesotympanum
into the hypotympanum (figure 1).
HRCT temporal bone showed soft tissue attenuation mass in the left epitympanum and mesotympanum
, superomedially over the round window niche and oval window.
The radiologist identified a nonenhancing, hyperdense lentiform mass within the left mesotympanum
7) 10 (27) Soft Tissue Density in mesotympanum
This makes sense when one considers that when the endoscope is rotated to view the posterior mesotympanum
, the stapedial tendon will block visualization of the posterior crus.