Abstract
Congenital anomalies and variations should be kept in mind when evaluating diseases in the pediatric patient group. A 12 years old girl presented with findings of acut abdomen. Clinical and laboratory data were consistent with acute pancreatitis. Imaging findings showed a peristaltic cystic tissue with a thick wall and central lumen in the head of the pancreas. In the operation, it was shown that this cystic lesion was associated with the accessory pancreatic duct and had no duodenal connection. In the pathology report, the presence of duodenal intestinal tissue compatible with a duplication cyst located in the head of the pancreas was proven. By sharing this rare case, keeping in mind the underlying congenital anomalies in any pathology in children and emphasizing the importance of ultrasonographic dynamic real-time examination in abdominal imaging.