Nasobiliary Drain Assisted EUS-guided Gastroenterostomies in Unresectable Malignant Gastric Outlet Obstruction

Plain-language summary

Gastric outlet obstruction in malignant disease appears when the tumor affects the gastroduodenal area, precluding the passage of food into the small bowel. This condition severely affects the quality of life. In patients with unresectable tumors, there are various available treatments:a surgical bypass connecting the stomach to the small bowel, placing a stent through the tumor to widen the passage and creating a gastrointestinal bypass with a lumen apposing metal stent. These stents are deployed with an echoendoscope, which allows to identify a small bowel loop and to deploy the stent, connecting the small bowel and the stomach. This is called a EUS-guided gastroenterostomy (EUS-GE). EUS-GE is a rather novel procedure. Various techniques to create EUS-GE have been proposed. In this study, the investigators will retrieve data from the procedure and during the thirty following days from consecutive patients undergoing an EUS-GE. The objectives of the study are: * To perform a detailed step by step description of the nasobiliary drain assisted EUS-GE * To describe the adverse events encountered * To describe the proportion of clinical and technical success * To assess its impact on the patients' quality of life. * To assess the evolution of the oral intake during the first month after the procedure

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