[Endoscopy training by using ex vivo and simulators: a new teaching tool].

In recent decades, the traditional teaching model of gastrointestinal endoscopy has been based on the teacher-student tutorial method based on theoretical models. Today, simulators have the advantages of virtual reality. The handling apparatus is similar to that used in clinical practice; it is safe, which allows unlimited use, cost-effective for institutions and with superior performance over other training models. Besides, biological simulators are a viable, accessible and affordable tool to simulate gastrointestinal lesions, allowing training in endoscopy with a high degree of similarity in the endoscopic appearance. In this review, we analyze both models, showing its advantages for the training of the endoscopist of the times.