Endoscopic Ultrasound-Guided Gastroenterostomy Nationwide: Prospective Registry.

This is project of help and support for the introduction of the GASTROENTEROANASTOMOSIS technique guided by ENDOSCOPIC -ULTRASOUND (EUS-GE) in centers in Catalonia, facilitating a teacher training. The main objective is facilitate a safe introduction of the technique, limiting technical failures, and if necessary, support in rescue techniques. The goal of this interventional study is to assess the impact of a teaching and on live-support model in the introduction of the gastroenteroanastomosis technique, evaluating its effects in safety and the learning curve. regarding the results in safety and learning curve of for the introduction \[type of study: observational study or clinical trial\] is to \[learn about, test, compare etc.\] in \[describe participant population/health conditions\]. The main question\[s\] it aims to answer are: * \[question 1\] * \[question 2\] Participants will \[describe the main tasks participants will be asked to do, treatments they'll be given and use bullets if it is more than 2 items\]. If there is a comparison group: Researchers will compare \[insert groups\] to see if \[insert effects\].