title: Gastric Visualization in Dacryoscintigraphy: An Unequivocal Sign of Patent Nasolacrimal Duct.
abstract: We reported a 6-year-old girl with a history of left-eye epiphora since 2 years ago who was referred to our nuclear medicine center for dacryoscintigraphy imaging. The scan showed obstruction in the proximal portion of the nasolacrimal duct in the left eye. Imaging also showed patent nasolacrimal duct of the right eye. Tc pertechnetate activity was seen in the esophagus and stomach owing to swallowing of the excreted tracer in the nasal cavity. This was an unequivocal sign of patent lacrimal apparatus.
authors.affiliation: From the Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Hamed
authors.initials: H
authors.lastname: Shayegani
authors.forename: Somayeh
authors.initials: S
authors.lastname: Khosravi
authors.forename: Toktam
authors.initials: T
authors.lastname: Masoudi
authors.forename: Ghasemali
authors.initials: G
authors.lastname: Divband
authors.forename: Ramin
authors.initials: R
authors.lastname: Sadeghi
mesh_terms: D002648:Child; D004947:Esophagus / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging*; D009301:Nasolacrimal Duct / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D013670:Sodium Pertechnetate Tc 99m; D013270:Stomach / Q000000981:diagnostic imaging*
chemical_list: D019275:Radiopharmaceuticals; D013670:Sodium Pertechnetate Tc 99m