ADJUNCTIVE USE OF MITOMYCIN-C ON ENDOSCOPIC LACRIMAL SURGERY

Aims-Endoscopic endonasal dacryocystorhinostomy (DCR) has some advanta ges over external DCR as a less invasive method with no skin incisions . Hut the success rate of the operation has not reached the level of e xternal method. In this study, a wound healing inhibitor mitomycin C w as used intraoperatively to prevent the closure of the osteum after th e operation. Methods-Endoscopic endonasal DCR was performed on 40 eyes of 39 patients (26 female, 13 male). Mitomycin C was applied to the o stium in 14 of 23 patients who had undergone primary endoscopic DCR by means of a microdrill and in eight of 17 patients who had a revision endoscopic DCR secondary to a previously failed external DCR. Results- The postoperative follow up period was 9-27 (mean 18.2) months. The su ccess rate of endoscopic DCR with intraoperative mitomycin C was 77.3% ,, whereas the success rate of endoscopic DCR without mitomycin C was 77.8%,. The statistical analysis did not show a difference between the two groups according to the ostium size and their success rates. Conc lusions-Adjunctive use of a wound healing inhibitor is considered to i ncrease the success rate of endoscopic endonasal DCR. Its intraoperati ve use seems to be easy and safe. Hut the study of this limited series shows no benefit in using it.