title: Ultrasound follow-up for gallbladder polyps less than 6 mm may not be necessary.
abstract: BACKGROUND
  The management of ultrasound (US) detected gallbladder (GB) polyps remains a dilemma. The aim of this study was to assess the size distribution and the outcome of US follow-up of GB polyps.
  
  
  METHODS
  The study was approved by the Danish Data Protection Agency. US reports from patients examined with abdominal US in our department from January 2008 to the end of December 2009 were reviewed with a view to including all patients with GB polyps. Patients with GB polyps are routinely recommended a 2-year follow-up with US every six months. The GB polyp size was recorded at baseline and at subsequent US reports. Pathology reports were finally reviewed for all patients with GB polyps to check who underwent cholecystectomy and to register the histological diagnosis.
  
  
  RESULTS
  A total of 203 patients (median age 54 years; range 19-95 years) with GB polyps were included; 89 (44%) men and 114 (56%) women. The mean polyp size was 5 mm (range 2-40 mm). In 143 patients (70%) the GB polyp diameter was less than 6 mm. The first US follow-up was performed in 120 patients (59%), and only 31 (15%) completed the full 2-year US follow-up programme. Polyp size was stable in 100 patients, decreased in five patients, increased in eight and resolved in 15 patients. A total of 13 patients (6%) underwent cholecystectomy. Of the 203 patients, none showed neoplastic or malignant GB polyps.
  
  
  CONCLUSIONS
  We recommend that follow-up US of patients with GB polyps < 6 mm is avoided. Alternatively, the intervals between US follow-up of GB polyps < 6 mm may be extended.
  
  
  BACKGROUND
  not relevant.
  
  
  BACKGROUND
  not relevant.
authors.affiliation: Radiologisk Afdeling, Vejle Hospital, 7100 Vejle, Denmark.
authors.forename: Malene Roland V
authors.initials: MR
authors.lastname: Pedersen
authors.forename: Claus
authors.initials: C
authors.lastname: Dam
authors.forename: Søren Rafael
authors.initials: SR
authors.lastname: Rafaelsen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002763:Cholecystectomy; D003937:Diagnosis, Differential; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D005704:Gallbladder / Q000000981:diagnostic imaging* / Q000601:surgery; D005706:Gallbladder Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000000981:diagnostic imaging* / Q000601:surgery; D012189:Retrospective Studies; D014463:Ultrasonography; D055815:Young Adult