<prompt> All the following are causes of acute pancreatitis except-Gall stoneAlcoholHemochromatosisHypercalcemia  <response>: Causes of Acute PancreatitisCommon CausesGallstones including microlithiasis - most commonHypertriglyceridemiaEndoscopic retrograde cholangiopancreatography ERCP, especially after biliary manometry.Trauma especially blunt abdominal traumaPostoperative abdominal and nonabdominal operationDrugs L-asparaginase, thiazide diuretics, furosemide, estrogens, azathioprine, 6-mercaptopurine, methyldopa.sulfonamide, tetracycline, valproic acid, anti-HIV medicationsSphincter of Oddi dysfunctionUncommon causesVascular causes and vasculitis ischemic-hypoperfusion states after cardiac surgeryConnective tissue disorders and thrombotic thrombocytopenic purpura TTPCancer of the pancreasHypercalcemiaPeriampullary diverticulumPancreas divisumHereditary pancreatitisCystic fibrosisRenal failureRare causesInfections mumps, coxsackievirus, cytomegalovirus, echovirus, parasites.Autoimmune i.e., Sjogrens syndromeCauses to consider in patients with recurrent bouts of acute pancreatitis without an obvious etiologyOccult disease of the biliary tree or pancreatic ducts, especially microlithiasis, sludgeDrugsPancreatic cancerIdiopathicHypertriglyceridemiaSphincter of Oddi dysfunctionPancreas divisumCystic fibrosis 