J Korean Radiol Soc.  1988 Oct;24(5):731-738. 10.3348/jkrs.1988.24.5.731.

Temporal bone CT analysis of congenital ear anomalies (part III)

• Hwang JW
• Moon MJ
• Sung KB

• KMID: 2359204
• DOI: http://doi.org/10.3348/jkrs.1988.24.5.731

Abstract

Authors analysed the CT findings of the congenital ear anomalies of twenty-nine patients for 2 years and 3 months. The results were as follows; 1. Most of the patients were under the age of 20(82.7%) and prevalent in male(72.4%). 2. Clinially, congenital ear anomalies were detected in 20 patients (68.9%), conductive hearing loss in4, sensorineural hearing loss in 1, and the remained 4 patients were detected incidentally without clinical symptom. 3. In the cases of unilateral involvement of 20 patients, right ear was more common (12/20). Eight of 9bilateral involvement showed similar degree. 4. The middle ear malformations were found in 22 patients (75.9%) and bilateral in 4 patients. 26 cases of middle ear malformations had been classified by Frey into 4 groups: Group I in 5, Froup II in 9, Group III in 9 and Group IV in 3. 5. Incidentally found ear anomaly was lateral semicirtcularcanal formed a single cavity with the vestibule in all patients (5 pts.) 6. Inner ear malformations accompanying sensorineural hearing loss were found in 3 patients with bilateral involvement and middle ear malformations were accompanied in 2 patients. The degree of involvemenet of labyrinth was variable.

MeSH Terms

Ear*
Ear, Inner
Ear, Middle
Hearing Loss, Conductive
Hearing Loss, Sensorineural
Humans
Temporal Bone*