The Clinical Study of Endoscopic Dacryocystorhinostomy / 대한이비인후과학회지

ABSTRACT

BACKGROUND AND OBJECTIVES: Endoscopic dacryocystorhinostomy (DCR) has become a common procedure in the otolaryngologic field thanks to the improvement of endoscope. The endoscopic procedure has several advantages, such as better hemostasis, minimal morbidity and no external scar. However, postoperative obstruction of newly created stoma is still a challenging problem. So we used mitomycin C in six cases for analyzing its effect of preventing postoperative obstruction. MATERIALS AND METHODS:We retrospectively reviewed 40 cases of endoscopic DCR performed between Mar., 1997 and Jan., 1998 to analyze preoperative causes of epiphora, postoperative complications, subjective postoperative improvement and overall success rate. RESULTS: The total success rate was 80%. The most common cause of failure was an obstruction of the newly created stoma with granulation tissue. However, we found better success rate (83%) in six cases where mitomycin C were used to prevent obstruction of stoma. CONCLUSION: Endoscopic DCR is considered to be the procedure with more advantages compared to the external approach, and mitomycin C is a valuable choice of antimetabolite to prevent postoperative granuloma formation.