Evidence Review
Copyright ©The Author(s) 2021.
World J Gastroenterol. Jun 21, 2021; 27(23): 3148-3157
Published online Jun 21, 2021. doi: 10.3748/wjg.v27.i23.3148
Table 1 Imaging findings favoring an inflammatory or malignant cause[39]
Inflammatory cause
Malignant cause
Penetrating duct signAbrupt cutoff of the pancreatic duct
Collateral or side branch dilationUpstream obliteration of side branches
Duct-to-parenchyma ratio < 0.34Duct-to-parenchyma ratio ≥ 0.34
AIP: occasionally perivascular involvementVessel encasement and caliber changes
SMA-to-SMV ratio < 1.0SMA-to-SMV ratio ≥ 1.0