title: Imperforation of the nasolacrimal duct as a cause of nasal obstruction in the newborn.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D003560:Cysts / Q000150:complications; D003607:Dacryocystitis / Q000209:etiology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000209:etiology*; D007765:Lacrimal Apparatus / Q000002:abnormalities*; D007766:Lacrimal Apparatus Diseases / Q000150:complications; D009301:Nasolacrimal Duct / Q000002:abnormalities*; D009668:Nose Diseases / Q000209:etiology*