This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
All are true about chronic pancreatitis except 
Select and explain. 
A. Characterized by irregularities of pancreatic ducts, duct strictures and areas of dilation, B. 60-80% will give history of acute episodes, C. CT scan showing pancreatic calcification is diagnostic of chronic pancreatitis, D. Serum amylase is always raised
D: Serum amylase is always raised
Answer: D: Serum amylase is always raised 
Explanation: Amylase and lipase levels are not always elevated in chronic pancreatitis, making the diagnosis often clinical Cambridge criteria for chronic Pancreatitis on ERCP Stage Typical Changes Normal Normal appearance of side branches and main pancreatic duct Equivocal Dilatation/Obstruction of <3 side branches ; normal main pancreatic duct Mild Dilatation/Obstruction of >3 side branches;normal main pancreatic duct Moderate Additional stenosis and dilatation of main pancreatic duct Severe Additional obstructions, cysts, stenosis of main pancreatic duct ;calculi Ref: Sabiston 20th edition Pgno : 1531-1536