Accepted at 4:16 p.m. Jan, 25, 2024 by herstein.jacob
Author: salmanumer
Co-authors: herstein.jacob
Related Note: 1484603837299
Rationale for change

fa 2023 pg 550
https://www.amboss.com/us/knowledge/cholesteatoma/

Text Text
Extra
- Often presents with painless otorrhea

- May be described as a white pearly mass behind the tympanic membrane

- Treatment is surgical excision

- Primary cholesteatoma: due to chronic negative pressure in the middle ear, causing retraction pockets in the tympanic membrane that become cystic and accumulate squamous cell debris

- Secondary cholesteatoma: due to tympanic membrane perforation (otitis media) allowing migration of squamous epithelium into the middle ear

- This card used to say "desquamated keratin debris," but that wording is not accurate for all types of cholesteatomas, and UW/AMBOSS/FA23 now use broader language (Jan 2024)


Photo credit: Michael Hawke MD, CC BY 4.0, via Wikimedia Commons
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