- Acute inflammatory process of the pancreas with variable involvement of other regional tissues or remote organ systems.
- Gallstones and alcohol abuse are the most common causes of acute pancreatitis, accounting for 60-80% of cases.
- Other etiologies inlcude idiopathic, blunt trauma, post endoscopic retrograde cholangiopancreatography, hypertriglyceridemia, drug-induced, congenital anomalies (pancreatic divisum, choledochocele), pancreatic tumors, cystic fibrosis, and Reye syndrome.
- Local complications include fluid collections, pancreatic pseudocysts, abscess, pancreatic necrosis, hemorrhage, venous thrombosis, and pseudoaneurysm formation.
 Imaging Findings
Patient #1: Gallstone pancreatitis
Patient #2: Necrotizing pancreatitis