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Updated: Aug 15, 2026

09:07
Techniques of Endoscopic Ossiculoplasty
Published on: January 26, 2024
Isolated Congenital Ossicular Chain Anomalies
Natsuko Obara1, Hiroshi Okuda1, Noriko Nagase1
1Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu, JPN.
Cureus
|August 14, 2026
Summary
Congenital ossicular chain anomalies (COCAs) can run in families, causing conductive hearing loss even with normal ear exams. Early imaging and surgery can significantly improve hearing in affected siblings.
Area of Science:
- Otolaryngology
- Genetics
- Pediatric Medicine
Background:
- Isolated congenital ossicular chain anomalies (COCAs) are rare causes of conductive hearing loss.
- Familial clustering of COCAs with normal otoscopic findings is seldom reported.
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