mastoid air cell


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mastoid air cell

Any of the variable-sized, air-filled sinuses inside the mastoid antrum. About 20% of adult skulls have no mastoid air cells.
See also: cell
References in periodicals archive ?
Out of the 34 cases with patent auditory tube, 15 cases (44%) had well pneumatized mastoid air cells and 19 cases (56%) had poorly pneumatized mastoid air cell system.
We found that the area of the mastoid air cells was significantly smaller in the elderly group than in the younger and middle groups of the diseased ears.
In addition, there was soft-tissue thickening and oedema of the right external auditory canal, fluid in the middle ear and mastoid air cells suggestive of malignant otitis externa.
HRCT showed ASOM in 4 patients where dependent opacification of middle ear cavity were noted with dependent air-fluid level formations in mastoid air cells in 2 patients.
Cortical mastoidectomy is exenteration of all accessible mastoid air cells preserving the posterior meatal wall.
Hypoplasia and hypopneumatisation with sclerosis of right mastoid air cells.
CT also showed opacification of the middle ear cavity and mastoid air cells, while MRI showed fluid in the mastoid air cells; these findings were bilateral in patients 1 and 2 and left-sided in patient 3.
Report: Soft tissue opacification envolving (L) middle ear cavity and mastoid air cells with focal erosion of tegmen tympani.
Drilling of the petrous bone will often open up mastoid air cells, which communicate with the middle ear cavity.
High resolution computed tomography provides excellent of bony land marks within the temporal bone, due to the temporal bone inherent contrast, its dense bone being surrounded by air of the tympanic cavity and mastoid air cells.
5) T2-weighted MRI is sensitive to mucosal changes and accumulation of fluid in the mastoid air cells.
Overpneumatization of paranasal sinuses and mastoid air cells lead to elevation of the petrous ridge.