According to the results obtained in tympanomastoidectomy
studies, a minimum of 0.5 ml air space volume is needed in the middle ear in order to ensure optimum sound transmission (11).
The favorable prognostic factors affecting outcomes in ossicular chain reconstruction are a low level of otorrhea [6, 16], the presence of malleus handle [6, 8, 12, 13, 15-17], the presence of stapes superstructure [7, 9, 12, 14, 17], normal stapes mobility , the presence of chorda tympani nerve , normal middle ear mucosal status [12-14, 16], intact canal wall tympanomastoidectomy
(CWU) [5, 10, 11, 16], primary surgery [9-11, 16, 17], and local anesthesia .
(12) In other studies, the incidence of residual cholesteatoma discovered on endoscopy after microscope-only tympanomastoidectomy
has ranged between 17 and 31%.
HRCT should be a mandatory preoperative requirement before posting a patient for a tympanomastoidectomy
evaluated the audiometric results after using open cavity tympanomastoidectomy
in advanced attic cholesteatoma .
should be considered in case of failure of medication or complicated CSOM [2, 10, 12].
The best treatment is surgery, and the extent of resection depends on the staging, from intact canal wall tympanomastoidectomy
to a subtotal petrosectomy.
(open technique) is the primary method of choice in the treatment of cholesteatoma.
Later sections cover tympanic membrane reconstruction, ossiculoplasty, tympanomastoidectomy
, hybrid tympanomastoid, and other surgical techniques.
Endoscopic technique allows minimally invasive removal of cholesteatoma with results that compare well to traditional post auricular tympanomastoidectomy
. The advantages and limitations of the microscope have defined transmastoid access as the surgical intervention of choice for the treatment of cholesteatoma.
No tympanoplasties had been performed but 1 patient had undergone tympanomastoidectomy
at another hospital.
Treatment for childhood CHL may involve medical and surgical management, ranging from myringotomy and ventilation tube (grommet) insertion for persistent middle-ear effusions, tympanomastoidectomy
for cholesteatoma with recon-struction of the ossicular chain, to bone-anchored hearing systems for congenital aural atresia.