Transverse unenhanced abdominal CT scans of a 41-year-old man with AP who was discharged from the hospital 6 days after admission and had an EPIC score of 1. (A) Pleural effusions not present. (B) Right retroperitoneal inflammation. (C and D) Mesenteric inflammation and pelvic ascites not present. AP = acute pancreatitis, CT = computed tomography, EPIC = extrapancreatic inflammation on computed tomography.