title: [Value of dacryocystography in localization diagnosis of lacrimal duct stenosis].
abstract: OBJECTIVE
  Evaluation of dacryocystography in the preoperative localisation of stenosis of the lacrimal passage.
  
  
  METHODS
  The lacrimal system of 20 patients (25 eyes) suffering from lacrimal passage obstruction was examined either by conventional (n = 20) or by digital (n = 5) technique. Diagnostic imaging was evaluated concerning topographic Information of the pathologic lacrimal system, localisation of the level and differential diagnosis of the cause of the obstruction.
  
  
  RESULTS
  Cause of the obstruction was chronic dacryocystitis (n = 16), dacryolithiasis (n = 1), atresia of the lacrimal duct (n = 2), posttraumatic lesions (n = 3), rhinosinusitis (n = 1) and carcinoma of the maxillary sinus (n = 1). In 23 of 25 cases (92%) we found an exact correlation between dacryocystography and the intraoperative findings. The variation of stenosis types as well as different examination techniques are presented and compared with literature findings.
  
  
  CONCLUSIONS
  Dacryocystography is a valuable method in the diagnosis and preoperative planing in lacrimal system obstruction.
authors.affiliation: Abt. für Radiologie der Eberhard-Karls-Universität, Tübingen.
authors.forename: L
authors.initials: L
authors.lastname: Pereira
authors.forename: F
authors.initials: F
authors.lastname: Dammann
authors.forename: S H
authors.initials: SH
authors.lastname: Duda
authors.forename: W D
authors.initials: WD
authors.lastname: Reinbold
authors.forename: C D
authors.initials: CD
authors.lastname: Claussen
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003607:Dacryocystitis / Q000000981:diagnostic imaging* / Q000601:surgery; D003608:Dacryocystorhinostomy; D003937:Diagnosis, Differential; D006801:Humans; D007223:Infant; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011300:Preoperative Care; D011859:Radiography