Congenital nasolacrimal duct obstruction.
Egbert
J E
JE
D002648:Child; D002675:Child, Preschool; D003608:Dacryocystorhinostomy / Q000379:methods; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000151:congenital*; D009301:Nasolacrimal Duct / Q000601:surgery*