title: Endoscopic ultrasonography does not differentiate neoplastic from non-neoplastic small gallbladder polyps.
abstract: OBJECTIVE
  To assess the ability of endoscopic ultrasonography (EUS) to differentiate neoplastic from non-neoplastic polypoid lesions of the gallbladder (PLGs).
  
  
  METHODS
  The uses of EUS and transabdominal ultrasonography (US) were retrospectively analyzed in 94 surgical cases of gallbladder polyps less than 20 mm in diameter.
  
  
  RESULTS
  The prevalence of neoplastic lesions with a diameter of 5-10 mm was 17.2% (10/58); 11-15 mm, 15.4% (4/26), and 16-20 mm, 50% (5/10). The overall diagnostic accuracies of EUS and US for small PLGs were 80.9% and 63.9% (P < 0.05), respectively. EUS correctly distinguished 12 (63.2%) of 19 neoplastic PLGs but was less accurate for polyps less than 1.0 cm (4/10, 40%) than for polyps greater than 1.0 cm (8/9, 88.9%) (P = 0.02).
  
  
  CONCLUSIONS
  Although EUS was more accurate than US, its accuracy for differentiating neoplastic from non-neoplastic PLGs less than 1.0 cm was low. Thus, EUS alone is not sufficient for determining a treatment strategy for PLGs of less than 1.0 cm.
authors.affiliation: Institute for Digestive Research and Digestive Disease Center, Soon Chun Hyang University College of Medicine, 657 Hannam-Dong, Yongsan-Ku, Seoul, South Korea. yksky001@hanmail.net
authors.forename: Young Koog
authors.initials: YK
authors.lastname: Cheon
authors.forename: Won Young
authors.initials: WY
authors.lastname: Cho
authors.forename: Tae Hee
authors.initials: TH
authors.lastname: Lee
authors.forename: Young Deok
authors.initials: YD
authors.lastname: Cho
authors.forename: Jong Ho
authors.initials: JH
authors.lastname: Moon
authors.forename: Joon Seong
authors.initials: JS
authors.lastname: Lee
authors.forename: Chan Sup
authors.initials: CS
authors.lastname: Shim
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D019160:Endosonography; D005706:Gallbladder Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D011127:Polyps / Q000000981:diagnostic imaging*; D011237:Predictive Value of Tests; D012189:Retrospective Studies