title: Opportunistic screening for abdominal aortic aneurysm.
abstract: OBJECTIVE
  To contribute to the current debate on screening for abdominal aortic aneurysm (AAA).
  
  
  METHODS
  Radiology department of the John Radcliffe Hospital, Oxford.
  
  
  METHODS
  The prevalence of AAA in 317 clinically referred male patients aged 65-74 undergoing abdominal ultrasonography with no clinical suspicion of an AAA was investigated over a period of one year.
  
  
  RESULTS
  Over the year 15/317 (5%) patients were found to have an aneurysm (defined as aortic diameter (> or = 30 mm), with eight (3%) patients having an aortic diameter of > or = 40 mm. Six months later appropriate management for the AAA had been started for only four patients. A knowledge assessment questionnaire sent to 245 hospital clinicians and general practitioners showed that 17 (12%) of the 139 respondents would initiate no review of patients found to have an aneurysm of 30-39 mm and two would take no action with aneurysms of 40-49 mm. Thirty two (23%) respondents would seek advice on management for all categories of aneurysm, 14% from the radiologist.
  
  
  CONCLUSIONS
  Opportunistic screening for AAA in men undergoing clinically indicated abdominal ultrasonography is easy, productive, without discernible cost, and discloses a prevalence of AAA comparable with that of population screening programmes. Routine opportunistic measurement of aortic diameter during abdominal ultrasonography in the at risk group would allow 12-15% of men aged 65-74 to be screened for AAA within five years without the need for any additional resources.
authors.affiliation: Department of Radiology, John Radcliffe Hospital, Oxford, United Kingdom.
authors.forename: N D
authors.initials: ND
authors.lastname: Derbyshire
authors.forename: D R
authors.initials: DR
authors.lastname: Lindsell
authors.forename: J
authors.initials: J
authors.lastname: Collin
authors.forename: T S
authors.initials: TS
authors.lastname: Creasy
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging*; D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000453:epidemiology / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008403:Mass Screening; D015995:Prevalence; D014463:Ultrasonography