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Isolated Congenital Incus Anomaly

Other Title
선천성 침골 기형
Authors
박, 헌이; 한, 동희; 이, 종빈; 최, 성준; 정, 연훈; 박, 기현
Citation
Taehan Ibi Inhukwa Hakhoe chi, 52(4):335-343, 2009
Journal Title
Taehan Ibi Inhukwa Hakhoe chi; Journal of the Korean Otolaryngological Society; 대한이비인후과학회지
ISSN
1225-035X
Abstract
Background and Objectives: A non-progressive and conductive hearing loss with normal eardrum, which has no history of trauma and infection is highly suggestive of a congenital ossicular malformation. Among ossicular anomalies, the most common anomalous ossicle is stapes. However, incus anomaly is sometimes encountered with or without stapes anomaly. The objectives of this study are to describe patterns of incus anomaly, encountered in patients who have a normal eardrum and to analyze their surgical results with special reference to the patterns of incus anomaly.



Subjects and Method:We reviewed 26 patients (31 ears) with congenital incus anomaly, which were confirmed through exploratory tympanotomy at Ajou University Hospital from 1994 to 2005. We analyzed temporal bone CT, preoperative and postoperative audiometric findings, and surgical findings.



Results: 10 anomalous patterns were detected out of 31 cases of congenital incus anomaly. Incus without its long process was the most common anomalous pattern. In 15 out of 26 cases (57.7%), incus anomaly was associated with stapes anomaly, which was usually unilateral. We could get hearing improvement in 26 out of 31 ears (89.1%).



Conclusion:Various anomalous patterns of incus were noted in our series. Incus anomaly was often associated with stapes anomaly, which was usually unilateral. The surgical result of incus anomaly was excellent except the cases without stapes.
Keywords
침골등골기형전음성 난청IncusStapesAnomalyConductive hearing loss
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Otolaryngology
AJOU Authors
박, 헌이이, 종빈정, 연훈박, 기현
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