title: Brunner's gland hamartoma: computed tomographic findings with histopathologic correlation in 9 cases.
abstract: OBJECTIVE
  To describe the computed tomographic (CT) features of Brunner's gland hamartoma with histopathologic correlation.
  
  
  METHODS
  The CT images of 9 patients with pathologically proven Brunner's gland hamartoma were reviewed retrospectively. All patients underwent CT performed on multidetector-row CT scanner with various protocols, all of which included portal venous phase.
  
  
  RESULTS
  Brunner's gland hamartomas presented as small (mean, 1.9 cm) Yamada type II or III (67%, 6/9) polyps with frequent internal cyst (33%, 3/9). They were isoattenuated on unenhanced CT (83%, 5/6) and hypoattenuated in portal phase (56%, 5/9) when compared with the pancreas. Peripheral rimlike enhancement in earlier phase was commonly found (67%, 6/9) and most of them enhanced homogeneously in the later phase (100%, 4/4).
  
  
  CONCLUSIONS
  In a patient with asymptomatic small submucosal mass in the duodenal first or second portion, hypoattenuated mass with peripheral rimlike enhancement or internal cystic change suggests the possibility of Brunner's gland hamartoma.
authors.affiliation: Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Saebeom
authors.initials: S
authors.lastname: Hur
authors.forename: Joon Koo
authors.initials: JK
authors.lastname: Han
authors.forename: Min-A
authors.initials: MA
authors.lastname: Kim
authors.forename: Jeong-Mo
authors.initials: JM
authors.lastname: Bae
authors.forename: Byung Ihn
authors.initials: BI
authors.lastname: Choi
mesh_terms: D000328:Adult; D000368:Aged; D002011:Brunner Glands / Q000000981:diagnostic imaging* / Q000473:pathology; D004378:Duodenal Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006222:Hamartoma / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*