A 50-year-old chronic alcoholic and smoker presents with intermittent episodes of epigastric pain, nausea and vomiting, along with features of malabsorption since the past 6 months. He has lost 12 kg over the last year and was hospitalized for 3 days, 3 years ago with acute abdominal pain. Serum amylase and lipase are only mildly elevated. A CT-scan of the abdomen was done along with MRCP. What is the possible diagnosis:- CECT ABDOMEN MRCP