The investigators included patients 15 - 85 years old, any sex. Diagnosis of mild acute pancreatitis according to the Ranson, APACHE II and BISAP.
Signed infromed consent to participate in the study. All participants had a hepatic and biliary ultrasound to determine the biliary etiology.
The investigators excluded patients with pancreatitis of nonbiliary etiology, pregnant, severe pancreatitis, cholangitis or choledocholithiasis demonstrated during the hospital stay or with other comorbidities.
