title: Multidetector CT imaging of the pancreatic groove: differentiating carcinomas from paraduodenal pancreatitis.
abstract: OBJECTIVE
  This study aims to identify multidetector row CT (MDCT) findings that differentiate paraduodenal pancreatitis (PDP) from groove carcinomas (GC).
  
  
  METHODS
  Two radiologists retrospectively reviewed various imaging features on pancreas protocol CT scans of 8 PDP and 8 GC patients. Two-tailed Fisher's Exact Test was used for statistical analysis.
  
  
  RESULTS
  MDCT findings correlating with PDP included benign common bile duct morphology (P<.01), duodenal wall thickening (P<.05), and cystic groove lesions (P<.01). A statistical difference in gastroduodenal artery (GDA) encasement was not observed (P=.119).
  
  
  CONCLUSIONS
  There are several MDCT findings that favor PDP over GC. However, presence of GDA encasement is not a reliable distinguishing feature.
authors.affiliation: Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive H1307 MC 5105, Stanford, CA, 94305, USA; Department of Radiology, VA Palo Alto Health Care System, 3801 Miranda Avenue MC 114, Palo Alto, CA, 94304, USA. Electronic address: lshin@stanford.edu.
authors.forename: Lewis K
authors.initials: LK
authors.lastname: Shin
authors.affiliation: Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive H1307 MC 5105, Stanford, CA, 94305, USA. Electronic address: bjeffrey@stanford.edu.
authors.forename: R Brooke
authors.initials: RB
authors.lastname: Jeffrey
authors.affiliation: Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive H2110, Stanford, CA 94305, USA. Electronic address: pair@upmc.edu.
authors.forename: Reetesh K
authors.initials: RK
authors.lastname: Pai
authors.affiliation: Department of Radiology, Johns Hopkins University, JHOC 3251, 601 N. Caroline Street, Baltimore, MD, 21287, USA. Electronic address: srsraman3@gmail.com.
authors.forename: Siva P
authors.initials: SP
authors.lastname: Raman
authors.affiliation: Department of Radiology, Johns Hopkins University, JHOC 3251, 601 N. Caroline Street, Baltimore, MD, 21287, USA. Electronic address: efishman@jhmi.edu.
authors.forename: Elliot K
authors.initials: EK
authors.lastname: Fishman
authors.affiliation: Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive H1307 MC 5105, Stanford, CA, 94305, USA; Department of Radiology, VA Palo Alto Health Care System, 3801 Miranda Avenue MC 114, Palo Alto, CA, 94304, USA. Electronic address: eolcott@stanford.edu.
authors.forename: Eric W
authors.initials: EW
authors.lastname: Olcott
mesh_terms: D000328:Adult; D000368:Aged; D001158:Arteries / Q000000981:diagnostic imaging; D003135:Common Bile Duct / Q000000981:diagnostic imaging / Q000473:pathology; D004386:Duodenum / Q000098:blood supply / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D010179:Pancreas / Q000000981:diagnostic imaging* / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging*; D010195:Pancreatitis / Q000000981:diagnostic imaging* / Q000473:pathology; D012189:Retrospective Studies; D013270:Stomach / Q000098:blood supply
keywords: Groove carcinoma; Groove pancreatitis; Pancreatic groove; Paraduodenal pancreatitis