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Otolaryngol Head Neck Surg. 2008 May;138(5):672-8. doi: 10.1016/j.otohns.2008.01.023.

External auditory exostoses: evaluation and treatment.

Author information

1
House Clinic, Los Angeles, CA 90057, USA.

Abstract

OBJECTIVE:

To determine (1) if external auditory exostosis (EAE) severity in a surgical exostosis population differs between ears and (2) the incidence of complications from postauricular canalplasty for EAE.

STUDY DESIGN:

A retrospective review.

SUBJECTS AND METHODS:

Three hundred twenty-seven patients (401 ears) underwent drill canalplasty for EAE from 1990 to 2006. EAE severity was graded, and air and bone thresholds were used to evaluate hearing changes.

RESULTS:

There were no significant differences in surgery rate or severity between right and left ears (71% grade 3 in both ears), with 95 percent grade 3 in operated ears. Prolonged healing occurred in 4.5 percent, with 1 TM perforation (0.2%). Sensorineural hearing at 4 kHz worsened slightly (mean change = 3.7 dB, P < or = 0.001), with 4.8 percent worsening >15 dB (maximum 30 dB), but sensorineural bone average was unchanged (mean = 0.2 dB). EAE recurred in 8 of 91 ears with long-term follow-up, occurring up to 15 years postsurgery.

CONCLUSIONS:

EAE severity in surgical patients does not differ between right and left ears. Drill canalplasty via the postauricular approach minimizes complications.

Comment in

PMID:
18439477
DOI:
10.1016/j.otohns.2008.01.023
[Indexed for MEDLINE]

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