Risk Factors and Nomogram for Pancreatic Stone Formation in Chronic Pancreatitis over a Long-Term Course: A Cohort of 2,153 Patients

Background: Pancreatic stones are pathognomonic of chronic pancreatitis (CP). This study aimed to determine the incidence, identify risk factors, and develop a nomogram for pancreatic stones in CP patients. Methods: Patients with CP admitted to our center from January 2000 to December 2013 were enrolled. Cumulative rates of pancreatic stones after the onset of CP and after the diagnosis of CP were calculated. Patients were randomly assigned, in...