RESUMO
Duodenum duplications are uncommon congenital anomalies. Most symptomatic cases are diagnosed in childhood and usually present with obstructive or bleeding symptoms. Acute pancreatitis is rarely attributed to these cysts. To report a new case of duodenum duplication revealed by acute pancreatitis. This 3 year old child presented with an acute pancreatitis. Abdominal ultrasonography and Computer tomography were performed showing a cystic mass depending of the 2[nd] duodenum. Diagnosis of duodenal duplication is made in laparotomy. A surgical resection of the duplication was performed respecting the papilla. Microscopic examination of the specimen confirmed the duodenal duplication. The patient was asymptomatic after the intervention. Duodenum duplications are uncommon congenital anomalies. Acute pancreatitis might be revealing presentation