title: Small flat umbilicated tumors of the colon: radiographic and pathologic findings.
abstract: OBJECTIVE
  We describe the radiographic and pathologic findings of small flat umbilicated tumors of the colon detected on double-contrast barium enema examinations performed in a Western population.
  
  
  CONCLUSIONS
  Unlike those reported by Japanese authors, the small flat umbilicated tumors of the colon in our patients were usually hyperplastic polyps, previously called "inverted hyperplastic polyps." Nevertheless, colonoscopy with excisional biopsy is warranted for such tumors detected on double-contrast barium enema examinations because of the small possibility that these tumors represent adenoma or even early adenocarcinoma.
authors.affiliation: Department of Radiology, University of Pennsylvania Medical Center, MRI Bldg. 1, 3400 Spruce St., Philadelphia, PA 19104, USA.
authors.forename: M E
authors.initials: ME
authors.lastname: Cunnane
authors.forename: S E
authors.initials: SE
authors.lastname: Rubesin
authors.forename: E E
authors.initials: EE
authors.lastname: Furth
authors.forename: M S
authors.initials: MS
authors.lastname: Levine
authors.forename: I
authors.initials: I
authors.lastname: Laufer
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D003287:Contrast Media; D004733:Enema; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate