title: "Reverse-figure 3" sign in duodenal adenocarcinoma arising in a villous adenoma: radiographic demonstration.
abstract: The radiographic "reverse-figure 3" sign is a well-known indicator of pancreatic head enlargement. We present a case in which this characteristic sign was produced by an invasive adenocarcinoma of the duodenum that arose in a periampullary villous adenoma.
authors.affiliation: Department of Radiology, University of Texas Medical Branch, Galveston 77550.
authors.forename: P
authors.initials: P
authors.lastname: Goodman
authors.forename: L N
authors.initials: LN
authors.lastname: Anaya
authors.forename: W K
authors.initials: WK
authors.lastname: Gourley
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000000981:diagnostic imaging* / Q000473:pathology; D000236:Adenoma / Q000000981:diagnostic imaging* / Q000473:pathology; D000328:Adult; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed