Congenital absence of the nasolacrimal duct.
McNab
A A
AA
Royal Children's Hospital, Melbourne, Australia.
D002675:Child, Preschool; D003608:Dacryocystorhinostomy; D005260:Female; D006801:Humans; D007223:Infant; D007767:Lacrimal Duct Obstruction / Q000151:congenital*; D008297:Male; D009301:Nasolacrimal Duct / Q000002:abnormalities* / Q000601:surgery