[Duodenal duplication cyst]

The duodenal duplication cyst is an uncommon inherited anomaly. Its etiology is related to malformations of the canal in the gastrointestinal duct during the formation of the embryo. It develops in the infancy period or during childhood, it is uncommon in adults. The most frequent finding, is abdominal mass, although it might appear along with obstructive symptoms, recidivante pancreatitis and digestive bleeding. The diagnosis is based on image methods (ultrasonics, radiology, computed tomography, CPRE), nevertheless its identification through ultrasonics is of great value. Therefore we consider important the introduction of a 72-year-old woman case, whose pre-surgery diagnosis was performed with ultrasonics and reaffirmed by all other image methods. We also mention the usefulness of inner-surgery ultrasonics, in the surgery case of this pathology.