title: Endoscopic endonasal retrieval of a nasolacrimal duct stone via the valve of Hasner in the inferior meatus.
abstract: A 37 year old man presented with a 6 month history of a right epiphora with associated mucus discharge. Lacrimal irrigation demonstrated right unilateral partial nasolacrimal duct obstruction, confirmed with lacrimal scintigraphy. Nasal endoscopy showed a pale elevation in the right inferior meatus. Endoscopic endonasal examination revealed a yellow-white nasolacrimal duct stone emerging from the valve of Hasner in the inferior meatus. The distal nasolacrimal duct in the lateral wall of the inferior meatus was marsupialised and the stone removed. At 12 months follow-up the patient maintained complete resolution of symptoms.
authors: Oculoplastic and Orbital Service, Charing Cross Hospital, London, W6 8RF, UK.
authors: Ran Ben
authors: RB
authors: Cnaan
authors: Mariya
authors: M
authors: Moosajee
authors: Catherine J
authors: CJ
authors: Heatley
authors: Jane M
authors: JM
authors: Olver
mesh_terms: D000328:Adult; D002137:Calculi / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D003608:Dacryocystorhinostomy; D004724:Endoscopy / Q000379:methods; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging / Q000209:etiology; D008297:Male; D009297:Nasal Mucosa / Q000601:surgery; D009301:Nasolacrimal Duct / Q000000981:diagnostic imaging / Q000601:surgery*; D011877:Radionuclide Imaging