title: History and clinical signs.
authors.affiliation: Department of Internal Medicine, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon.
authors.forename: B H
authors.initials: BH
authors.lastname: Grahn
authors.forename: J
authors.initials: J
authors.lastname: Wolfer
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000151:congenital / Q000175:diagnosis* / Q000601:surgery; D004285:Dogs; D005260:Female; D007765:Lacrimal Apparatus / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000601:surgery; D007766:Lacrimal Apparatus Diseases / Q000151:congenital / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D009301:Nasolacrimal Duct / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography