Two cases of recurrent pancreatitis, due to duodenal duplication, are reported. The aim of this paper is to emphasise the role of endoscopic retrograde cholangiopancreatography (ERCP) or percutaneous transhepatic cholangiography (PTC) in the detection of associated pancreaticobiliary anomalies and in the planning of the correct surgical approach. The order of imaging in a child with recurrent pancreatitis should be US, barium meal and PTC. ERCP is often difficult to perform in children.