title: Proboscis lateralis.
abstract: An otherwise healthy 1-month-old female infant presented with a congenital nasal appendage in the left medial canthal region with associated left-sided nasal hypoplasia. The diagnosis of proboscis lateralis was made, and a 2-stage excision and reconstruction was performed in conjunction with probing and irrigation of the lacrimal system. The patient had markedly abnormal nasal anatomy, but a patent lower canalicular system with anomalous entry in the nose and a distally stenotic upper canalicular system on the affected side. A case report and review of proboscis lateralis is provided, as treatment of this rare congenital malformation should be multidisciplinary and necessitates an informed oculoplastic surgeon or ophthalmologist's assistance.
authors.affiliation: Division of Ophthalmic Plastic and Reconstructive Surgery, Weill Cornell Department of Ophthalmology, New York Presbyterian Hospital, New York, New York, USA.
authors.forename: Gary J
authors.initials: GJ
authors.lastname: Lelli
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Maher
authors.forename: James P
authors.initials: JP
authors.lastname: Milite
authors.forename: Robin
authors.initials: R
authors.lastname: Dyleski
mesh_terms: D019465:Craniofacial Abnormalities / Q000175:diagnosis / Q000601:surgery*; D003937:Diagnosis, Differential; D005143:Eyelids / Q000002:abnormalities* / Q000601:surgery; D005146:Facial Asymmetry / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007765:Lacrimal Apparatus / Q000002:abnormalities / Q000601:surgery; D009666:Nose / Q000002:abnormalities* / Q000601:surgery; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*