scholarly journals Morphometric examination of the paranasal sinuses and mastoid air cells using computed tomography

2005 ◽  
Vol 25 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Sacide Karakas ◽  
Ahmet Kavaklı
Keyword(s):  
Computed Tomography ◽  
Paranasal Sinuses ◽  
Air Cells ◽  
Mastoid Air Cells

Correlation between tympanometry volume and three-dimensional computed tomography mastoid volumetry in tympanoplasty candidates

2021 ◽  
pp. 1-5
Author(s):  
L Epprecht ◽  
L Qingsong ◽  
N Stenz ◽  
S Hashimi ◽  
T Linder
Keyword(s):  
Computed Tomography ◽  
Tympanic Membrane ◽  
Cell Volume ◽  
Radiation Injury ◽  
Three Dimensional ◽  
Non Invasive ◽  
Tympanic Membrane Perforations ◽  
Computed Tomography Scans ◽  
Air Cells ◽  
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.

Incidental finding of mastoid opacification in computed tomography imaging of the asymptomatic paediatric population

2019 ◽  
Vol 133 (7) ◽  
pp. 588-591
Author(s):  
T Placanica ◽  
S Anderson
Keyword(s):  
Computed Tomography ◽  
Incidental Finding ◽  
Radiological Finding ◽  
Acute Otitis Media ◽  
Paediatric Population ◽  
Computed Tomography Imaging ◽  
Acute Mastoiditis ◽  
Tomography Imaging ◽  
Air Cells ◽  
Mastoid Air Cells

AbstractBackgroundAcute mastoiditis is a clinically diagnosed suppurative infection of the mastoid air cells and is the most common complication of acute otitis media. Opacification of the mastoid air cells is a commonly reported radiological finding and patients are often erroneously diagnosed with acute mastoiditis when this is present.ObjectivesThis study aimed to quantify incidental findings of mastoid opacification in the asymptomatic paediatric population and contribute to the epidemiological data.MethodA retrospective cohort study was conducted of all paediatric patients who underwent relevant computed tomography imaging for a non-otological indication.ResultsData were collected from 767 patients in total. Mastoid opacification was reported in 82 patients. The prevalence was highest in patients aged zero to one year (n = 25, prevalence = 20.3 per cent), followed by those aged two to three years (n = 17, prevalence = 19.5 per cent).ConclusionMastoid opacification is a common incidental finding in the asymptomatic paediatric population, with prevalence rates between 5 per cent and 20 per cent depending on age. The prevalence peaks in patients aged zero to four years (19–20 per cent) and is inversely correlated with increasing age.

scholarly journals Spaceflight-Associated Changes in the Opacification of the Paranasal Sinuses and Mastoid Air Cells in Astronauts

2020 ◽  
Vol 146 (6) ◽  
pp. 571 ◽  
Author(s):  
Dani C. Inglesby ◽  
Michael U. Antonucci ◽  
Maria Vittoria Spampinato ◽  
Heather R. Collins ◽  
Ted A. Meyer ◽  
...  
Keyword(s):  
Paranasal Sinuses ◽  
Air Cells ◽  
Mastoid Air Cells

scholarly journals Bilateral sinoliths in the ethmoid sinus – a rare Cone Beam CT finding

2017 ◽  
Vol 7 (25) ◽  
pp. 57-59 ◽  
Author(s):  
Cristina Julieta Sava ◽  
Mugurel Constantin Rusu
Keyword(s):  
Computed Tomography ◽  
Bone Quality ◽  
Paranasal Sinuses ◽  
Cone Beam Ct ◽  
Clinical Manifestations ◽  
Ethmoid Sinus ◽  
Cone Beam ◽  
The Right ◽  
Ct Finding ◽  
Air Cells

Abstract Sinoliths are calculi found particularly in paranasal sinuses, the rarest location being the ethmoid air cells. There were previously reported only 4 cases of unilateral large ethmoidal sinoliths (ES), this one being the fifth report. We report here the incidental bilateral evidence in a 34-year-old female patient evaluated in Cone Beam Computed Tomography (CBCT) of minor ES. The left ES, of 1.6 mm2 sagittal size, occupied the suprabullar cell, in front of the ground lamella and behind the anterior ethmoidal canal. The right ES, of 7.6 mm2, was located behind the ground lamella. The radiodensity of each ES was about 1000 HU, their bone quality being thus assessed. This is the first evidence of bilateral and clinically silent ethmoidal sinoliths. Being small-sized and incidentally found, it seems reasonable to consider that ethmoidal sinoliths could have a higher incidence but they are overlooked due to the lack of clinical manifestations.

scholarly journals Bilateral Inflammatory Aural Polyps: A Manifestation of Samter's Triad

2009 ◽  
Vol 2009 ◽  
pp. 1-3 ◽  
Author(s):  
Robert Brobst ◽  
Nichole Suss ◽  
Stephanie Joe ◽  
Miriam Saadia-Redleaf
Keyword(s):  
Computed Tomography ◽  
Middle Ear ◽  
Unusual Case ◽  
History Of ◽  
Samter’S Triad ◽  
The Right ◽  
Inflammatory Changes ◽  
Air Cells ◽  
Middle Ear Cleft ◽  
Mastoid Air Cells

We report an unusual case of bilateral inflammatory aural polyps in a patient with Samter's triad. This 52-year-old patient had a history of chronic rhinosinusitis with sinonasal polyps, asthma, and aspirin sensitivity, with progressive right-sided hearing loss, otorrhea, and aural fullness. She was found to have bilateral aural polyps, with the larger obstructing lesion on the right. A computed tomography supported these findings and revealed bilateral opacification of the middle ear cleft and mastoid air cells. An initial right tympanomastoidectomy was performed with the specimen histologically resembling a typical sinonasal polyp. We speculate that this patient's middle ear polyposis is secondary to the inflammatory changes of Samter's triad. This has not been described previously in the literature.

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