To Study the Effect of Silicone Tube Intubation with and without Mitomycin C in Revision of Failed Dacryocystorhinostomy Surgery

Need for the study: The most common cause of DCR failure is occlusion of the rhinostomy site by soft tissue, common canalicular obstruction, cicatricial ostium closure, formation of synechiae between the ostium and the middle turbinate or the septum, and Abstract Aims: To study the effect of silicone tube intubation with and without mitomycin c in revision of external dacryocystorhinostomy following failed dacryocystorhinostomy (DCR) surgery. Settings and Design: A Retrospective study. Materials and Methods:A retrospective review of patients who underwent revision of external DCR between november 2012 and march 2015 at teaching institute.In this study 45 patients of failed DCR were included, 30 of them were endoscopic DCR, and 15 were External DCR.In this study mitomycin c (MMC) was applied in 20/45 patients and silicone tube intubation done in all 45 patients.The tube was removed at 3 months after surgery.Statistical Analysis: Statistical analysis was carried out using SPSS statistical software package (Version 16.0; SPSS).Results: At the last examination, 3 patients still had epiphora 6.67%, and their nasolacrimal passage was obstructed.42 patients had no complaints, and their lacrimal system was patent (93.33%).Conclusion: We concluded that revision of failed dcr surgery with silicone tube intubation and mitomycin c has good results.Mitomycin c can be used in selective cases in which excessive fibrosis and granulation tissue was found intraoperatively.