Endoscopic submucosal dissection(ESD) has important advantages over endoscopic mucosal resection(EMR) for early gastrointestinal neoplasia treatment, but its difficult learning curve and associated risks have con-stra...Endoscopic submucosal dissection(ESD) has important advantages over endoscopic mucosal resection(EMR) for early gastrointestinal neoplasia treatment, but its difficult learning curve and associated risks have con-strained its wider expansion. ESD training includes a comprehensive study of ESD basics, attending live cas-es and performing initial interventions in animal mod-els, ideally under expert supervision. Mentoring meth-ods in Japan and other Asian countries are reviewed, with a special concern in the conditions recommended for trainees to engage in an ESD program and achieve competence. Animal training is usually based on the well-known porcine model. Ex vivo models for esopha-geal, gastric and rectal ESD are cheap and easy to set up, whereas in vivo training requires special settings and veterinarian support. Nevertheless, it is advisable to gain experience in the live pig, with conditions that are similar to humans, before moving on to real pa-tients. Particular attention is focused on colorectal ESD(CR-ESD), one of the most difficult locations for this technique. Since most of the potential lesions for ESD in Western countries are located in the colon or rectum, excellence in training is of paramount importance for successful outcomes in CR-ESD in the West.展开更多
Over the last few years, endoscopic submucosal dissection(ESD) has shown to be effective in the management of early colorectal neoplasms, particularly in Asian countries where the technique was born. In the Western wo...Over the last few years, endoscopic submucosal dissection(ESD) has shown to be effective in the management of early colorectal neoplasms, particularly in Asian countries where the technique was born. In the Western world, its implementation has been slow and laborious. In this paper, the indications for ESD, its learning model, the available methods to predict the presence of deep submucosal invasion before the procedure and the published outcomes from Asia and Europe will be reviewed. Since ESD has several limitations in terms of learning achievement in the West, and completion of the procedure for the first cases is difficult in our part of the world, a short review on colorectal assisted ESD has been included. Finally, other endoscopic and surgical treatment modalities that are in competition with colorectal ESD will be summarized.展开更多
Splenic rupture(SR)after colonoscopy is a very rare but potentially serious complication.Delayed diagnosis is common,and may increase morbidity and mortality associated.There is no clear relation between SR and diffic...Splenic rupture(SR)after colonoscopy is a very rare but potentially serious complication.Delayed diagnosis is common,and may increase morbidity and mortality associated.There is no clear relation between SR and difficult diagnostic or therapeutic procedures,but it has been suggested that loop formation and excessive torquing might be risk factors.This is a case of a65-year-old woman who underwent endoscopic submucosal dissection(ESD)for lateral spreading tumor in the descending colon,and 36 h afterwards presented symptoms and signs of severe hypotension due to SR.Standard splenectomy was completed and the patient recovered uneventfully.Colorectal ESD is usually a long and position-demanding technique,implying torquing and loop formation.To our knowledge this is the first case of SR after colorectal ESD reported in the literature.Endoscopists performing colorectal ESD in the left colon must be aware of this potential complication.展开更多
文摘Endoscopic submucosal dissection(ESD) has important advantages over endoscopic mucosal resection(EMR) for early gastrointestinal neoplasia treatment, but its difficult learning curve and associated risks have con-strained its wider expansion. ESD training includes a comprehensive study of ESD basics, attending live cas-es and performing initial interventions in animal mod-els, ideally under expert supervision. Mentoring meth-ods in Japan and other Asian countries are reviewed, with a special concern in the conditions recommended for trainees to engage in an ESD program and achieve competence. Animal training is usually based on the well-known porcine model. Ex vivo models for esopha-geal, gastric and rectal ESD are cheap and easy to set up, whereas in vivo training requires special settings and veterinarian support. Nevertheless, it is advisable to gain experience in the live pig, with conditions that are similar to humans, before moving on to real pa-tients. Particular attention is focused on colorectal ESD(CR-ESD), one of the most difficult locations for this technique. Since most of the potential lesions for ESD in Western countries are located in the colon or rectum, excellence in training is of paramount importance for successful outcomes in CR-ESD in the West.
文摘Over the last few years, endoscopic submucosal dissection(ESD) has shown to be effective in the management of early colorectal neoplasms, particularly in Asian countries where the technique was born. In the Western world, its implementation has been slow and laborious. In this paper, the indications for ESD, its learning model, the available methods to predict the presence of deep submucosal invasion before the procedure and the published outcomes from Asia and Europe will be reviewed. Since ESD has several limitations in terms of learning achievement in the West, and completion of the procedure for the first cases is difficult in our part of the world, a short review on colorectal assisted ESD has been included. Finally, other endoscopic and surgical treatment modalities that are in competition with colorectal ESD will be summarized.
文摘Splenic rupture(SR)after colonoscopy is a very rare but potentially serious complication.Delayed diagnosis is common,and may increase morbidity and mortality associated.There is no clear relation between SR and difficult diagnostic or therapeutic procedures,but it has been suggested that loop formation and excessive torquing might be risk factors.This is a case of a65-year-old woman who underwent endoscopic submucosal dissection(ESD)for lateral spreading tumor in the descending colon,and 36 h afterwards presented symptoms and signs of severe hypotension due to SR.Standard splenectomy was completed and the patient recovered uneventfully.Colorectal ESD is usually a long and position-demanding technique,implying torquing and loop formation.To our knowledge this is the first case of SR after colorectal ESD reported in the literature.Endoscopists performing colorectal ESD in the left colon must be aware of this potential complication.
