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Multidetector CT imaging of the pancreatic groove: differentiating carcinomas from paraduodenal pancreatitis
Lewis K Shin1, R Brooke Jeffrey2, Reetesh K Pai3
1Department 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.
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.
