title: A clinical study of Henoch-Schönlein Purpura associated with  malignancy.
abstract: BACKGROUND
  Malignancy has been reported as a causative factor of cutaneous vasculitis, although only two retrospective epidemiological studies have analysed the association between Henoch-Schönlein purpura (HSP) and malignancy to date.
  
  
  OBJECTIVE
  To analyse the association between adult HSP and malignancy.
  
  
  METHODS
  We retrospectively reviewed the medical records of patients and found 103 cases of HSP over the past 20 years. Fifty-three cases (aged > or = 41 years) were categorized to two groups including 'with malignancy' or 'without malignancy', so that we could analyse the differences of clinical features between them. We also compared our study to previous reports.
  
  
  RESULTS
  Twenty-three cases out of 53 patients exhibited underlying malignant tumours. We focused on nine patients in which malignant tumours were thought to be strongly associated. Seven of nine patients exhibited new metastatic lesions or died due to underlying cancer within 1-32 months.
  
  
  CONCLUSIONS
  An association between HSP and malignant disease might have important diagnostic and pathophysiologic implications.
authors.affiliation: Department of Dermatology, University of Yamanashi, Japan. h-mitsui@hotmail.co.jp
authors.forename: H
authors.initials: H
authors.lastname: Mitsui
authors.forename: N
authors.initials: N
authors.lastname: Shibagaki
authors.forename: T
authors.initials: T
authors.lastname: Kawamura
authors.forename: H
authors.initials: H
authors.lastname: Matsue
authors.forename: S
authors.initials: S
authors.lastname: Shimada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications*; D012189:Retrospective Studies; D055815:Young Adult