1, Conclusion : Lacrimal sac tumors are rare.

2, Objective: probe into the treatment method of lacrimal sac and nasal cavity anastomosis surgery failed cases.

3, Proceeding anastomose for 16 loser of lacrimal sac and nasal cavity anastomose surgery again.

4, Objective To explore the effects of crush - massage to ameliorate lacrimal sac treating congenital obstruction nasolacrimal duct.

5, Chronic dacryocystitis:It is a quite common ophthalmopathy, due to narrow or obstruction of nasolacrimal duct, tears retain in the lacrimal sac complicated by bacterial infection.

6, And most importantly, it leaves the space for globe malposition by adequate osteotomy and compression fracture to the plate of ethmoid bone without injuring the optic nerves and lacrimal sac.

7, Inner canthal ligament projects on the middle of the lacrimal sac,(http:///lacrimal sac.html) almost equal to the level of common lacrimal canaliculus.

8, ObjectiveTo evaluate the clinical value of lacrimal duct stent for treatment of lacrimal sac mucocele.

9, To evaluate the effect of excision of the fistulous tract in the treatment of congenital lacrimal sac fistula.

10, ConclusionInterventional procedure using lacrimal duct stent is practicable for the treatment of lacrimal sac mucocele.

11, Conclusions There was obvious clinic significance for using labium mucosa graft to replaced the lacrimal sac defect and to realize the lacrimal duct' s repatency.

12, Method: 15 adult cadavers (30 sides) were studied on projection anatomy of lacrimal sac on the lateral wall of nasal cavity and the relationship between lacrimal sac and inner canthal ligament.

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