Congenital posterior choanal atresia

Area of Science:

• Otolaryngology
• Pediatric Surgery
• Medical Genetics

Background:

• Congenital bony posterior choanal atresia is a rare nasal obstruction.
• Unilateral atresia is more common than bilateral.
• Associated congenital anomalies are frequent and often severe.

Purpose of the Study:

• To review cases of congenital bony posterior choanal atresia.
• To analyze clinical presentation, associated anomalies, and surgical outcomes.
• To advocate for early surgical intervention.

Main Methods:

• Retrospective review of 48 cases of congenital bony posterior choanal atresia.
• Analysis of patient demographics, clinical features, associated anomalies, and surgical techniques.
• Comparison of transpalatal and endonasal surgical approaches.

Main Results:

• Unilateral atresia occurred in 64% of cases.
• Bilateral atresia presented with respiratory distress, while unilateral atresia showed feeding difficulties and nasal discharge.
• 48% of patients had associated congenital anomalies, with 82.5% being major or multiple.
• Initial success rates for transpalatal and endonasal approaches were 57% and 59%, respectively.
• Subsequent dilatations were frequently required for initial failures to achieve long-term success.
• Prophylactic bougienage by parents did not significantly alter outcomes.

Conclusions:

• Congenital bony posterior choanal atresia necessitates early surgical management.
• Both transpalatal and endonasal approaches are viable, requiring similar long-term follow-up.
• The high incidence of significant associated anomalies underscores the importance of thorough patient evaluation.