In the normal ear: 42 cases out of 50 (84%) had well pneumatized mastoid air cell
system in the normal ear as opposed to 8 cases (16%) that had poor pneumatization.
Also the extent of disease involving the mastoid air cells
and mastoid antrum is well appreciated with HRCT.
Although it is considered that the severity of chronic otitis media in childhood is related to growth inhibition of the mastoid air cells
, there have been no studies comparing the areas of mastoid air cells
in patients with chronic perforated otitis media grouped by age.
Hollingshead pointed out that the accessory air cells begin to pneumatize after puberty and achieve full size after several years as with mastoid air cells
It is important to evaluate for extension into mastoid air cells
, tegmen tympani integrity and facial nerve canal delineation, as these features may change the surgical management.
MRI brain (P+C) abnormal signal intensity is seen in left mastoid air cells
, left petrous apex and left sided Meckel's cave.
5] In majority of the adult cholesteatoma patients mastoid air cells
are very few in number and sclerotic [1, 5, 7, 8] Also at the same time trabeculations are lost in these patients.
Magnetic resonance imaging showed the presence of oedema with soft- tissue thickening in the right external auditory canal along with evidence of fluid within the middle ear cavity and mastoid air cells
on the right side.
5) Early diagnosis of the disease process can prevent the dreaded complications of the diseases of the middle ear and mastoid air cells
High-resolution CT of the temporal bones detected a soft-tissue mass in the left EAC; there was no bony destruction, and the middle ear and mastoid air cells
were normal (figure 1, B).
There was no bony erosion, the scutum was sharp and intact, and the antrum and mastoid air cells
were well pneumatized.
1) Acute mastoiditis (AM) is a complication of AOM that involves inflammation and purulent invasion of the mastoid air cells