Luis E. Caro

Development of an E-learning System for the Endoscopic Diagnosis of Early Gastric Cancer: An International Multicenter Randomized Controlled Trial

Background In many countries, gastric cancer is not diagnosed until an advanced stage. An Internet-based e-learning system to improve the ability of endoscopists to diagnose gastric cancer at an early stage was developed and was evaluated for its effectiveness. Methods The study was designed as a randomized controlled trial. After receiving a pre-test, participants were randomly allocated to either an e-learning or non-e-learning group. Only those in the e-learning group gained access to the e-learning system. Two months after the pre-test, both groups received a post-test. The primary endpoint was the difference between the two groups regarding the rate of improvement of their test results. Findings 515 endoscopists from 35 countries were assessed for eligibility, and 332 were enrolled in the study, with 166 allocated to each group. Of these, 151 participants in the e-learning group and 144 in the non-e-learning group were included in the analysis. The mean improvement rate (standard deviation) in the e-learning and non-e-learning groups was 1·24 (0·26) and 1·00 (0·16), respectively (P < 0·001). Interpretation This global study clearly demonstrated the efficacy of an e-learning system to expand knowledge and provide invaluable experience regarding the endoscopic detection of early gastric cancer (R000012039).

Barrett ' s Esophagus: Is It a Risk Factor for Colorectal Cancer or an Association Between Them Does Exist ?

Barretts Esophagus: Is It a Risk Factor for Colorectal Cancer or an Association Between Them Does Exist?

Su1484 Prevalence of Barrett's Esophagus, Dysplasia and Esophageal Adenocarcinoma in a Single Centre in Argentina

underwent TEEM. A circular myotomy was safely accomplished in all. Resolution of dysphagia was reported in the immediate post op period in all patients and at 6 months. The average LES pressure decreased from average of 27.5 mm of Hg prior to the myotomy to average of 10.5 mm of Hg in 2 patients who have reached 6 month follow up. The esophagus remained a peristaltic. Conclusions: A decrease in LES pressure can be documented at 6 months following TEEM. We speculate that the benefits of TEEM are permanent.

Endoscopic ultrasound (EUS) in the staging and follow-up of gastric MALT lymphoma

Introduction: EUS is an appropriate procedure for assessing depth of invasion to the gastric wall, which may be divided into 5 layers. In patients with low-grade lymphoma located in the mucosa (MALT) it is possible to correctly stage pretreatment and evaluate the response to medical therapy by studying the gastric layers at the end of treatment.