[The study of detection and etiology of unilateral deafness in children].

Objective: To explore the detection approach and aetiology of single-side deafness(SSD) in children and provide evidence for diagnoses and treatment. Method: A retrospective study was performed. Medical history and radiological data of children with unilateral deafness were analyzed. Result: The mean age at diagnosis was 6 years old. The mean age at diagnosis was 7.7 month because of failure of universal newborn hearing screening. Inner ear malformations were identified in 80.6% of cases. Cochlear nerve deficiency(CND) was observed in almost 77.8% of our cases, accounts for 96.6% in children with inner ear malformations. Conclusion: The children with SSD could be early detected by UNHS. CND is the main aetiology for SSD. MRI should be the first image choice when SSD children was diagnosed.