There were altogether 20 NABS cases divided into diffused type of 6 cases and localized type of 14 cases clinically with an overall incidence of 5.25%. Diagnosis was confirmed by T tube cholongiography,ERCP and/or MRCP.

• 20例胆管非吻合口狭窄患者中；肝内外弥漫型狭窄6例；肝外局限型狭窄者14例；胆管非吻合口狭窄发生率5.；25%25 (20/381)；所有患者均经T管造影、ERCP或MRCP确诊。