Семейная врожденная непроходимость носослезного канала
Определение
A rare, genetic, otorhinolaryngological malformation characterized by congenital impatency of the nasolacrimal draingage system in various members of a family. Presentation is not specific and may include a uni- or bilateral medial canthal mass, dacryocystitis, nasal obstruction, periorbital cellulitis, and epiphora. Dacryocystocele and lacrimal puncta agenesis may be associated.