Modified Mucosal Flap Technique in Endoscopic Endonasal Dacryocystorhinostomy

Abstract

BACKGROUND The success rate of endonasal dacryocystorhinostomy with the modified flap technique is almost equivalent to that of external dacryocystorhinostomy. In the initial period, the nasal mucosal flap was excised in endoscopic endonasal dacryocystorhinostomy and the ridge of the bony ostium is left uncovered. This leads to outgrowth of the bony ostium which is the commonest cause for failure in endonasal dacryocystorhinostomy. In our modified technique, we have covered the bony ridge with nasal mucosal flap to prevent bony outgrowth and closure of the ostium. The study was performed to evaluate the improvement in success rate following modified mucosal flap technique in endoscopic endonasal dacryocystorhinostomy (DCR).