<prompt> Gold standard investigation for chronic pancreatitis is:MRIERCPPancreatic function testsFaecal fat estimation  <response>: Ans. b ERCP.Ref: Sabistons Textbook of Surgery, 20th ed p-1533Imaging Investigations for Chronic Pancreatitis: CT Scan: Dilated duct, Atrophy and calcification can be seen, Sensitivity 60-90, Specificity 85-100 MRCP: Sensitivity is lower than CT scan in detecting calcification. ERCP: Old Gold Standard - Now used only as therapeutic to stent in strictures in duct. Latest Most Sensitive and Gold standard is Endoscopic USG - Rosemont criteria is used 