Patients

Patients with AP who underwent pancreatic stenting within 48 hours of admission to our center between October 5, 2011, and January 1, 2018, were retrospectively analyzed. Diagnostic criteria, grading criteria, and local complications of AP were defined according to the 2012 revision of the Atlanta classification and definitions (4). The computed tomography severity index (CTSI) was used according to Balthazar’s CT grading standard (19). Patient screening was based on the following inclusion criteria: (I) the diagnosis of AP was confirmed according to the 2012 revision of the Atlanta classification and definitions (4); (II) patients were aged between 18 and 90 years; (III) patients voluntarily accepted pancreatic stenting for treatment of AP and signed informed consent. The following cases were excluded from this study: (I) AP in pregnancy; (II) recurrent pancreatitis after previous pancreatic stenting; (III) an acute episode of chronic pancreatitis; (IV) pancreatic stenting performed over 48 hours from admission.