External Dacryocystorhinostomy Using Buccal Mucous Membrane Graft Following Resection of Lacrimal Sac: A Case Report

We report a case of a 10-year-old patient presented with recurring nasolacrimal duct obstruction post-lacrimal sac cyst extirpation in which CT scan revealed a solidlesion that was more depicted by contrast-enhancedimage. The initial surgery and flap creation had inadvertently led to a mucosal shortage, posing a challenge for the subsequent procedure, which aimed to create aDacryocystorhinostomy (DCR). In a challenging approach, a buccal mucous membrane graft was employed to address the lack of mucous membrane required for the DCR. Over the course of five years, there was no recurrence of the cyst, signifying the success of this innovative treatment method of using buccal mucous membrane graft for external DCR.