Analysis of differences in facial nerve dehiscence and ossicular injury in chronic otitis media and cholesteatoma.
CONCLUSIONS
Facial nerve dehiscence (FND) and ossicular injury occurred more frequently in patients with cholesteatomatous than non-cholesteatomatous otitis media.


OBJECTIVE
FND and ossicular injury commonly occur intraoperatively in patients with otitis media, both with and without cholesteatoma. This study was designed to analyze differences in FND and ossicular injury between patients with cholesteatomatous and non-cholesteatomatous otitis media.


METHODS
Patients who underwent tympanomastoidectomy due to otitis media from January 2010 to July 2012 were analyzed retrospectively. Clinical features (age, sex, bacteria, and severity of preoperative hearing loss) and intraoperative findings (FND and state of ossicular injury) were compared in patients with cholesteatomatous and non-cholesteatomatous otitis media.


RESULTS
Of 212 patients with otitis media, 148 (69.8%) had non-cholesteatomatous and 64 (30.2%) had cholesteatomatous otitis media. Of these groups, 88.6% and 88%, respectively, had positive bacterial cultures. Facial nerve dehiscence was detected in 41 patients (27.7%) with non-cholesteatomatous and 41 (64.0%) with cholesteatomatous otitis media. Dehiscence of the tympanic segment was most frequently observed in both groups. Ossicular injury was detected in 52 (35.1%) and 51 patients (78.1%), respectively. Erosion was most frequent in the incus, followed by the stapes and malleus.
Department of Otorhinolaryngology, Kyung Hee University School of Medicine , Seoul , Korea.
Sun A
SA
Choi
Ho Min
HM
Kang
Jae Yong
JY
Byun
Moon Suh
MS
Park
Seung Geun
SG
Yeo
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D018424:Cholesteatoma, Middle Ear / Q000150:complications*; D002908:Chronic Disease; D004429:Ear Ossicles / Q000473:pathology*; D005155:Facial Nerve Diseases / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000150:complications*; D012189:Retrospective Studies; D055815:Young Adult