TY - JOUR
AR - SCR-2019-5-123
TI - A Tympanic Membrane Cholesteatoma: A Case Report and Literature Review
AU - Fei-Peng, Lee
AU - Pin-Zhir, Chao
AU - Hsing-Won, Wang
JO - Surgical Case Reports
PY - 2019
DA - Fri 29, Nov 2019
SN - 2613-5965
DO - http://dx.doi.org/10.31487/j.SCR.2019.05.23
UR - https://www.sciencerepository.org/a-tympanic-membrane-cholesteatoma-a-case-report-and-literature-review_SCR-2019-5-123 
KW - Cholesteatoma, tympanic membrane, hearing loss,acquired
AB - A 45-year-old female complained of right hearing loss with fullness in recent months. She underwent right
tympanoplasty type I about 4 years ago. On physical and otoscopic examination, a pearl-like mass about 3
x 4 mm in size over central part of right ear drum was noted. Pure tone audiometry test showed 35 decibel
(dB) average hearing loss of right ear, and 20 dB of left ear. Tympanogram test showed bilateral type A.
Computed tomography with thin cuts of the temporal bone revealed a 3 x 4 mm soft tissue mass over central
part of right ear drum. Excision of the mass under microscope was smoothly done. A cholesteatoma was
confirmed by pathology. She was uneventful during a regular follow-up. Cholesteatomas are benign
collections of keratinized squamous epithelium within the middle ear. A cholesteatoma usually occurred in
middle ear cavity or mastoid region, sometimes in external auditory canal. Tympanic membrane
cholesteatomas were seldom reported.