Definition A recently proposed system for classifying chronic pancreatitis based on endoscopic ultrasonography–EUS, which is designed to replaced the 1983 CT and ERCP-based Cambridge classification.
Comment While 70% of people with chronic pancreatitis report excess alcohol consumption– >150 g/day—over a long period (more than 20 years)—only 1 in 10 heavy drinkers develop chronic pancreatitis, suggesting underlying genetic predisposition or polymorphism.
Rosemont classification of chronic pancreatitis
Major criteria–given more weight
(1) Hyperechoic foci with shadowing and main pancreatic duct (PD) calculi
(2) Lobularity with honeycombing.
Minor criteria–given less weight
Cysts, dilated ducts ≥3.5 mm, irregular pancreatic duct contour, dilated side branches ≥1 mm, hyperechoic duct wall, strands, nonshadowing hyperechoic foci, and lobularity with noncontiguous lobules.
Depending on the criteria, patients are said to have EUS features that are
(1) consistent with chronic pancreatitis
(2) suggestive of chronic pancreatitis
(3) indeterminate of chronic pancreatitis or
Reference Gastrointest Endosc. 2009 Jun;69(7):1251-61. Epub 2009 Feb 24