Paranasal Sinuses and Mastoid Air Cells

Abstract Objective Ventilation of the middle ear and mastoid air cells is believed to play an important role in the pathogenesis of chronic ear disease. Traditionally, ventilation is assessed by computed tomography. However, this exposes patients to cumulative radiation injury. In cases with a perforation in the tympanic membrane, tympanometry potentially presents a non-invasive alternative to measure the ventilated middle-ear and mastoid air cell volume. This study hypothesised that total tympanometry volume correlates with ventilated middle-ear and mastoid air cell volume. Method Total tympanometry volume was compared with ventilated middle-ear and mastoid air cell volume on computed tomography scans in 20 tympanic membrane perforations. Results There was a high correlation between tympanometry and computed tomography volumes (r = 0.78; p < 0.001). A tympanometry volume more than 2 ml predicted good ventilation on computed tomography. Conclusion These results may help reduce the need for pre-operative computed tomography in uncomplicated cases with tympanic membrane perforations.

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Canal wall cholesteatoma following canalplasty

The Journal of Laryngology & Otology ◽

10.1017/s0022215109004885 ◽

2009 ◽

Vol 123 (10) ◽

pp. 1174-1176 ◽

Cited By ~ 2

Author(s):

M Martinez Del Pero ◽

N Donnelly ◽

N Antoun ◽

P Axon

Keyword(s):

Late Complication ◽

Canal Wall ◽

Ear Canal ◽

Early Complications ◽

Cartilage Reconstruction ◽

Air Cells ◽

And Cartilage ◽

Mastoid Air Cells

AbstractIntroduction:Bony canalplasty is a common otological procedure performed to widen a narrow ear canal. The aim of this report is to describe two unusual patients who presented with a canal wall cholesteatoma many years after bony canalplasty.Cases:Two patients, aged 28 and 52 years, are presented. Both underwent canalplasty, 14 and 17 years before re-presenting with cholesteatoma evident through posterior canal wall defects. Both patients underwent exploration of the mastoid cavities and cartilage reconstruction of the canal walls. There was no recurrence at 24 and three month follow-up examinations (variously), hearing was preserved in both cases, and the patients suffered no early complications.Conclusions:The most frequent long-term complication of canalplasty is re-stenosis of the external auditory canal. The importance of sealing any inadvertently opened mastoid air cells, in order to avoid the late complication reported, is emphasised.

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Masked mastoiditis with meningitis : do we treat ct scan?

Bangladesh Journal of Medical Science ◽

10.3329/bjms.v16i3.32875 ◽

2017 ◽

Vol 16 (3) ◽

pp. 458-460 ◽

Cited By ~ 1

Author(s):

Salman Bin Amiruddin ◽

Roslenda Abdul Rahman

Keyword(s):

Bacterial Meningitis ◽

Medical Science ◽

Acute Otitis Media ◽

Antimicrobial Treatment ◽

Radiological Findings ◽

Common Cause ◽

Source Of Infection ◽

Mucosal Lining ◽

Air Cells ◽

Mastoid Air Cells

Otogenic infection is the most common cause of meningitis.Therefore, it should be ruled out during clinical assessment of a patient with any intracranial infection. Masked mastoiditis is a known intratemporal complication of acute otitis media after inadequate antimicrobial treatment. It is defined as inflammation of mucosal lining and bony structures of the mastoid air cells with an intact tympanic membrane. It should be regarded as the source of infection in a patient with meningitis and positive radiological findings of mastoiditis even though the patient does not have any evidence of ear infection clinically. We report a case of bacterial meningitis following masked mastoiditis in an 68-years-old man.Bangladesh Journal of Medical Science Vol.16(3) 2017 p.458-460

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Surgery of the Mastoid in Ears with Middle Ear Effusion

Annals of Otology Rhinology & Laryngology ◽

10.1177/00034894800890s376 ◽

1980 ◽

Vol 89 (3_suppl) ◽

pp. 322-323 ◽

Cited By ~ 3

Author(s):

Jörgen Holmquist ◽

Jan Jarlstedt ◽

Anders Tjellström

Keyword(s):

Middle Ear ◽

Early Recognition ◽

Chronic Otitis Media ◽

Cell System ◽

Middle Ear Effusion ◽

Screening Programs ◽

Mucosal Changes ◽

Air Cells ◽

Ear Effusion ◽

Mastoid Air Cells

It has been demonstrated that in most ears with middle ear effusion the mastoid air cells may be involved as well. The mucosal changes and the secretion extends into all cavities of the ear including the mastoid air cells. In most ears insertion of a ventilating tube through the tympanic membrane is adequate for proper aeration of the middle ear as well as of the mastoid air cell system. The draining usually stops and the mucosa gradually changes into its normal condition. In a small percentage of these, the ear will continue to drain and the mastoid will not clear up. Antibiotics and decongestants fail to cure the ear. Surgical intervention of the mastoid may be indicated in the rare cases where conventional treatment fails to control the condition. The aim of this report is to 1) focus attention to the fact that the mastoid is an integral part of the middle ear cavity; 2) discuss the pathogenesis in stubborn ears with middle ear effusion; and 3) demonstrate the surgical procedure commonly used in our department in order to reestablish aeration of the mastoid air cell system. Early recognition and proper treatment of ears with middle ear effusion will hopefully reduce the incidence of stubborn cases and also decrease the number of those cases which end up with chronic otitis media and cholesteatoma. It is hoped that the screening programs involving school and even preschool children, as well as new preventative programs, will diminish the frequency of cases which need extensive surgery as discussed in this paper.

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The Development of the Mastoid Air Cells

The Journal of Laryngology & Otology ◽

10.1017/s0022215100038548 ◽

1933 ◽

Vol 48 (4) ◽

pp. 225-237 ◽

Cited By ~ 5

Author(s):

A. Brownlie Smith

Keyword(s):

Air Cells ◽

Mastoid Air Cells

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