title: Importance of cryptolytic lesions and pericryptal granulomas in inflammatory bowel disease.
abstract: OBJECTIVE
  To explore the diagnostic importance of pericryptal granulomas associated with epithelial lysis in colorectal biopsy specimens (cryptolytic colitis).
  
  
  METHODS
  A series of patients with suspected inflammatory bowel disease and colorectal biopsy specimens showing either isolated pericryptal granulomas (14 cases) or non-granulomatous pericryptal inflammation (eight cases) were followed. A diagnosis of Crohn's disease was established if subsequent biopsy specimens or intestinal resections showed unequivocal non-crypt related granulomas, or if there was evidence of significant small bowel disease.
  
  
  RESULTS
  Of the 14 patients with pericryptal granulomas and biopsy specimens, 10 were subsequently found to have Crohn's disease; of the eight patients with pericryptal inflammation only, one developed Crohn's disease. The former group also had a much higher instance of morbidity and required surgical intervention more often.
  
  
  CONCLUSIONS
  The presence of cryptolytic granulomas in a colorectal biopsy specimen otherwise showing only non-specific inflammatory changes should always raise suspicion of Crohn's disease, especially if surgery or ileo-anal pouch formation is contemplated.
authors.affiliation: Department of Pathology, Royal Infirmary, Glasgow.
authors.forename: F D
authors.initials: FD
authors.lastname: Lee
authors.forename: C
authors.initials: C
authors.lastname: Maguire
authors.forename: W
authors.initials: W
authors.lastname: Obeidat
authors.forename: R I
authors.initials: RI
authors.lastname: Russell
mesh_terms: D001706:Biopsy; D003424:Crohn Disease / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D005500:Follow-Up Studies; D006099:Granuloma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000150:complications / Q000473:pathology* / Q000601:surgery