Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.

术前造影了解囊的大小和阻塞的部，择最佳手术适应证。

Conclusion The lacrimal pathway obstruction after external dacryocystorhinotomy can usually be cured by the transnasal endoscopic examination and treatment.

结论对经外囊吻合术后道不通病例，内镜下对吻合进行检查，针对不同情况进行相应处理，常能使病人再次康复。

Method The clinical data of 15 cases with chronic dacryocystisis accepted dacryocystorhinostomy through nasal cavity and lacrimal sac were analyzed retrospectively.

回顾分析经内窥镜下囊吻合术治疗慢性囊炎15例的临床资料。