Subtraction macrodacryocystography.
D003608:Dacryocystorhinostomy; D005260:Female; D006801:Humans; D007765:Lacrimal Apparatus / Q000002:abnormalities / Q000000981:diagnostic imaging*; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging*; D008722:Methods; D011859:Radiography; D013382:Subtraction Technique