title: [Pyogenic granuloma of the lacrimal sac].
abstract: BACKGROUND
  Pyogenic granulomata belong to the group of inflammatory pseudotumours. They consist of granulation tissue usually following inflammatory processes or trauma.
  
  
  METHODS
  We report on a 86-year old female suffering from chronic dacryocystitis. In the course of the treatment exstirpation of the lacrimal sac was performed. The removed tissue was analysed histologically.
  
  
  RESULTS
  Histological examination revealed a dense lymphoplasmacellular infiltration underlying the epithelium of the lacrimal sac. A mushroom-like tumour rising into the lumen of the lacrimal sac could be observed. This tumour consisted of capillaries and a dense inflammatory infiltrate. The findings were consistent with a pyogenic granuloma of the lacrimal sac.
  
  
  CONCLUSIONS
  Pyogenic granulomata usually arise in the conjunctiva as a sequel of chronic lipogranulomatous inflammation. They are very rare in other areas such as the lacrimal drainage system.
authors.affiliation: Augenklinik der Ludwig-Maximilians-Universität München, Munich. Christos.Haritoglou@ak-i.med.uni-muenchen.de
authors.forename: Christos
authors.initials: C
authors.lastname: Haritoglou
authors.forename: Jan P
authors.initials: JP
authors.lastname: Hoops
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D003607:Dacryocystitis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006097:Granulation Tissue / Q000473:pathology; D017789:Granuloma, Pyogenic / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007765:Lacrimal Apparatus / Q000473:pathology / Q000601:surgery