Diffuse abdominal tenderness was present at abdominal examination. Routine biochemical tests and complete blood count were performed. The results were: white blood cells 12,600/μl, serum amylase 2,409 U/l, C-reactive protein 136 mg/l and lactate dehydrogenase 835 U/l. The serum calcium and lipid profile were normal. Hepatobiliary ultrasound was performed to exclude biliary pancreatitis and was found to be normal.