Inclusion Criteria:  Age 18 years or more Gastric outlet obstruction (GOO) caused by passable /unpassable stenosis in the antrum-duodenal region, to malignant or non-malignant conditions Patient capable of understanding and signing informed consent form Patient understanding the type of study and complying with the follow-up of complementary tests during the study's duration  Exclusion Criteria:  Massive ascites. Complete stenosis Failure to sign informed consent form Patients with intellectual handicap who are unable to understand the nature and possible consequences of the study, unless there is a competent legal representative Patients unable to adhere to subsequent follow-up requirements Severe coagulation disorder: INR > 1.5 not correctible with administration of plasma and/or platelets < 50,000/mm3