Mastoiditis other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. ; Associate Editor(s)-in-Chief: Mehrian Jafarizade, M.D 
Other mastoiditis imaging findings include otoscopic images of the tympanic membrane displaying middle ear effusion and infection. Also, tympanograms may be used for measuring pressure from fluid buildup in the middle ear.
Key Findings in Otoscopy in mastoiditis
Otoscopic examination of the ears may reveal the following signs indicative of mastoiditis:
- Erythema of the middle ear
- Presence of effusion
- Bulging of the tympanic membrane in otitis media with effusion
- Cloudy appearance of the tympanic membrane
- Immobility of the tympanic membrane
- Tympanic membrane perforation
Examples of Otoscopy in Mastoiditis
Key Findings in Tympanometry in mastoiditis
Tympanometry may reveal hearing loss due to effusion, as measured by abnormally large reflection of sound due to elevated pressure from fluid buildup.
- ↑ Rettig E, Tunkel DE (2014). "Contemporary concepts in management of acute otitis media in children". Otolaryngol. Clin. North Am. 47 (5): 651–72. doi:10.1016/j.otc.2014.06.006. PMC 4393005. PMID 25213276.
- ↑ Parlea E, Georgescu M, Calarasu R (2012). "Tympanometry as a predictor factor in the evolution of otitis media with effusion". J Med Life. 5 (4): 452–4. PMC 3539835. PMID 23346249.