Cholesteatoma: Difference between revisions
| Line 5: | Line 5: | ||
**Their accumulation results in a slowly expanding mass | **Their accumulation results in a slowly expanding mass | ||
**Sac of dead skin cells growing in middle ear on out of surface of TM | **Sac of dead skin cells growing in middle ear on out of surface of TM | ||
*Can destroy ossicles and expand into mastoid (rarely, intracranially) | *Can destroy ossicles and expand into mastoid (rarely, intracranially causing brain abscess or [[meningitis]]) | ||
*Often chronically infected with intermittent drainage | *Often chronically infected with intermittent drainage | ||
Revision as of 14:45, 19 October 2018
Background
- Commonly secondary to Eustachian tube dysfunction, which retracts TM
- A retraction pocket forms and desquamating skin cells are trapped
- Usually in "attic" involving pars flaccida
- Their accumulation results in a slowly expanding mass
- Sac of dead skin cells growing in middle ear on out of surface of TM
- Can destroy ossicles and expand into mastoid (rarely, intracranially causing brain abscess or meningitis)
- Often chronically infected with intermittent drainage
Clinical Features
- Retraction of TM around ossicles
- Formation of cholesteatoma that can retract into the attic of the middle ear
Differential Diagnosis
Ear Diagnoses
External
- Auricular hematoma
- Auricular perichondritis
- Cholesteatoma
- Contact dermatitis
- Ear foreign body
- Herpes zoster oticus (Ramsay Hunt syndrome)
- Malignant otitis externa
- Otitis externa
- Otomycosis
- Tympanic membrane rupture
Internal
- Acute otitis media
- Chronic otitis media
- Mastoiditis