The pseudocyst of the pancreas is rarely diagnosed and treated in our hospital, we report this first case of a 10-year-old child with no particular medical-surgical history with a history of impact trauma from the handlebars of his bicycle during a walk in the village. A week later, progressive abdominal pain appeared associated with an increase in the volume of the abdomen. A month after the trauma the signs of gastric and biliary compression settled type of nausea, postprandial vomiting, weight loss, anorexia, jaundice. After clinical, biological and radiological examinations, we retained the diagnosis of a pseudo cyst of the symptomatic pancreas. The treatment consisted in making an internal surgical bypass Kystogastric. Cytobacteriological examination of the collection of the contents of the pancreatic cyst revealed a multiresistant gram-negative bacterium «Achromobacter dentrificans», antibiotic therapy adapted to the germs was administered. The surgical suites were simple.