title: Duodenal carcinoma: sonographic findings.
abstract: BACKGROUND
  Duodenal carcinoma is a relatively rare tumor and its sonographic (US) findings have rarely been reported.
  
  
  METHODS
  We reviewed the clinical data and US results of 15 patients with histologically proven duodenal carcinoma to pinpoint the contribution of US to the diagnosis.
  
  
  RESULTS
  US was useful for not only detecting the duodenal carcinoma (13 of 15, 86.7%), which altered the endoscopic procedure in nine patients, but also for evaluating vascular involvement (marked portal invasion in four cases and inferior vena cava invasion in two cases). Four of the eight carcinomas arising from the second or third portion showed this vascular invasion.
  
  
  CONCLUSIONS
  After reviewing the clinical data and US results of 15 cases of duodenal carcinoma, we found that US was useful for detecting duodenal carcinoma and determining vascular invasion. Thus, US contributed significantly to alter the endoscopic procedure and patient management.
authors.affiliation: First Department of Internal Medicine, Akita University School of Medicine, 1-1-1 Hondo, Akita City, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ishida
authors.forename: K
authors.initials: K
authors.lastname: Konno
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Naganuma
authors.forename: T
authors.initials: T
authors.lastname: Komatsuda
authors.forename: N
authors.initials: N
authors.lastname: Yamada
authors.forename: Y
authors.initials: Y
authors.lastname: Hamashima
authors.forename: J
authors.initials: J
authors.lastname: Ishida
authors.forename: D
authors.initials: D
authors.lastname: Segawa
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
mesh_terms: D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000453:epidemiology; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018615:Ultrasonography, Doppler, Color