“ Can be congenital or acquired. It is an epidermoid cyst in the temporal bone. The vast majority are acquired and may be complicated by e...
“
Can be congenital or acquired. It is an epidermoid cyst in the temporal bone. The vast majority are acquired and may be complicated by erosion of the ossicles/tegmen tympani/lateral semicircular canal.
The tympanic membrane is grossly abnormal and recurrence is common. Congenital cholesteatomas have an intact tympanic membrane and mass lateral to the ossicular chain.
CT
The tympanic membrane is grossly abnormal and recurrence is common. Congenital cholesteatomas have an intact tympanic membrane and mass lateral to the ossicular chain.
CT
- Bone erosion—typically the scutum is affected (acquired cholesteatoma).
- Mass either lateral (acquired) or medial to the ossicular chain.
- Check for intracerebral abscess.
MRI
- Non-enhancing mass that is low signal on T1 and high signal on T2.
- Unlike other middle ear masses, cholesteatomas restrict on DWI
”
- For Radiology Cases, Discussion join: Radiology Made Easy on Facebook
- Subscribe to our youtube channel for FRCR radiology case discussion
- Join our Telegram group: Radiology Made Easy
