How is other etiologies of acute pancreatitis? (tumor and iatrogenic)

Tumor (1-2% of Pancreatitis found Pancreatic carcinoma Periampullary Tumor Mechanism :Blockage of secreted juice) Iatrogenic (Pancreatic Biopsy , Biliary exploration , Distal gastrectomy , Splenectomy B2 Gastrectomy & Jejunostomy Inc. intraduodenal P. cause backflow of enz. Any Sugery than cause Low Sys. Perfusion ERCP (most common) 2-10% Direct Inj. or Intraductal Hypertension)