title: Crohn's disease in the Chinese population. An experience from Hong Kong.
abstract: OBJECTIVE
  Crohn's disease was extremely rare among Chinese. We reviewed all cases diagnosed as having Crohn's disease during a five-year period.
  
  
  METHODS
  A diagnosis of Crohn's disease was made only if all of the following criteria were fulfilled: 1) clinical symptom(s) and sign(s) compatible with chronic inflammatory bowel disease; 2) exclusion of intestinal infection by repeated stool cultures; 3) macroscopic features of small and/or large intestinal inflammation with skip lesion, stricture, and fistula formation; 4) histologic features of Crohn's disease, i.e., focal lymphoid aggregate, focal cryptitis, and granuloma formation; 5) clinical response to conventional therapy for inflammatory bowel disease.
  
  
  RESULTS
  Fifteen ethnic Chinese patients were diagnosed as having Crohn's disease in this period. All patients had colitis, whereas small intestine inflammation was documented in only 47 percent of patients. Extraintestinal manifestations were uncommon except for arthropathy: ankylosing spondylitis (2), sacroiliitis (1), juvenile rheumatoid arthritis (1), and colitic arthritis (1). The majority of our patients responded to medical therapy. Surgery was undertaken in 33 percent of patients.
  
  
  CONCLUSIONS
  Although there is a general increased incidence of Crohn's disease in the Western world, we too are beginning to see more cases in the Far East. Nevertheless, gastrointestinal infection with bacteria and/or parasites should still be carefully excluded in these countries.
authors.affiliation: Department of Medicine, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin.
authors.forename: J J
authors.initials: JJ
authors.lastname: Sung
authors.forename: R K
authors.initials: RK
authors.lastname: Hsu
authors.forename: F K
authors.initials: FK
authors.lastname: Chan
authors.forename: C T
authors.initials: CT
authors.lastname: Liew
authors.forename: J W
authors.initials: JW
authors.lastname: Lau
authors.forename: A K
authors.initials: AK
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D044466:Asian People; D002648:Child; D003424:Crohn Disease / Q000150:complications / Q000208:ethnology*; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D008297:Male; D015995:Prevalence; D012189:Retrospective Studies