The role of multi-detector CT dacryocystography in the assessment of naso-lacrimal duct obstruction

Epiphora is related to functional or anatomic obstruction of the nasolacrimal system.AimEvaluate the role of multi-detector CT dacryocystography “CT-DCG” in naso-lacrimal duct obstruction “NLDO”.Patients and methodsTwenty patients with NLDO assessed by CT-DCG.ResultsIn nine infective lesions, CT-DCG revealed lacrimal sac distension, dacryoceles and dacryolith. Five patients had neoplastic NLDO; two primary adenocarcinomas, one neuroblastoma, one lymphoma and one fibrous dysplasia. Of four patients with idiopathic NLDO; three had mucous plugs and stenotic canals. The fourth proved as sarcoidosis. CT-DCG characterized NLDO in two post traumatic patients.ConclusionCT-DCG is indispensable in the assessment of NLDO.