Otitis media CT or MRI
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Luke Rusowicz-Orazem, B.S.
Overview
Key CT or MRI Findings in Otitis Media
Imaging in otitis media patients will reveal opacification of the middle ear[1]
Acute otitis media
- High Resolution CT scans of the temporal bone in acute otitis media patients may reveal complications, such as the following:[1]
- Acute coalescent otomastoiditis: Findings include mastoid septation and cortex erosion.
- MRI is used for patients with suspected intracranial complications, such as the following:
- Brain abscess
- Sinus thrombosis
- Meningitis
Otitis media with effusion
- For otitis media with effusion patients, contrast-enhanced MRI or CT scan imaging may reveal complete and homogenous middle ear and mastoid cavity opacification.[1]
- A tumor in the nasopharynx may also be revealed as a cause for effusion.
Chronic suppurative otitis media
- Primary imaging findings for chronic otitis media include the following:[1]
- Markers for inflammation
- Ossicle erosion or other possible causes for hearing loss
- Determination of cholesteatoma
- Intratemporal complications: petrositis, labyrinthitis, subperiosteal abscess, labyrinthine fistula
- Intracranial complications: brain abscess, meningitis
- Without a presence of cholesteatoma, MRI or HRCT images may reveal the following indications of chronic otitis media:
- Presence of fibrous tissue
- Tympanosclerosis
- Formating of new bone matter
- With presence of cholesteatoma, MRI or HRCT images may reveal the following indications of chronic otitis media:
- Ossicle erosion and displacement
- Extension of cholesteatoma to sinuses
CT or MRI Examples of Otitis Media
References
- ↑ 1.0 1.1 1.2 1.3 Trojanowska A, Drop A, Trojanowski P, Rosińska-Bogusiewicz K, Klatka J, Bobek-Billewicz B (2012). "External and middle ear diseases: radiological diagnosis based on clinical signs and symptoms". Insights Imaging. 3 (1): 33–48. doi:10.1007/s13244-011-0126-z. PMC 3292638. PMID 22695997.