title: The high prevalence of colorectal neoplasms in preoperative patients with abdominal aortic aneurysm or peripheral artery disease.
abstract: OBJECTIVE
  In Japan, the incidence of both colorectal carcinoma and vascular disease is increasing. We screened preoperative patients with abdominal aortic aneurysm (AAA) or peripheral artery disease (PAD) for colorectal cancer.
  
  
  METHODS
  This study was retrospective and cross-sectional.
  
  
  METHODS
  The subjects were 492 patients admitted for elective surgery of AAA or PAD.
  
  
  METHODS
  The patients underwent immunochemical faecal occult blood tests (FOBT) before operation, and those with positive results underwent investigations for colorectal neoplasm. We compared the results with that of screening programmes performed on the general population.
  
  
  RESULTS
  Of the 408 patients that underwent FOBT, 104 (25.5%) were positive. After colonoscopy, six (1.5%) had colorectal carcinoma and 16 (3.9%) had advanced adenoma. These values were several folds higher than that for the general population in Japan.
  
  
  CONCLUSIONS
  Patients with AAA or PAD carry a high risk for colorectal neoplasm.
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
authors.forename: T
authors.initials: T
authors.lastname: Miyata
authors.forename: H
authors.initials: H
authors.lastname: Nagawa
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D015179:Colorectal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology* / Q000473:pathology; D003430:Cross-Sectional Studies; D003663:Decision Trees; D017558:Elective Surgical Procedures; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008403:Mass Screening / Q000379:methods; D008875:Middle Aged; D009780:Occult Blood; D016491:Peripheral Vascular Diseases / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D011237:Predictive Value of Tests; D011300:Preoperative Care; D015995:Prevalence; D012189:Retrospective Studies; D018570:Risk Assessment