Background Endoscopic submucosal dissection (ESD) of residual or locally recurrent (RLR) colonic lesions after previous endoscopic mucosal resection (EMR) is an attractive but challenging technique. The present study aimed to evaluate the effectiveness and safety of ESD with double clip and rubber band traction (DCT-ESD) of RLR colonic lesions. Methods We retrospectively analyzed all consecutive DCT-ESD procedures for RLR colonic lesions (rectum excluded) performed in two French centers. The frequency of en bloc and R0 resections, procedure speed, additional surgery, and complications were evaluated. R0 resection was also used to investigate the learning curve. Results Among the 53 resections, 49 (92.5 %) were performed en bloc and 42 (79.2 %) achieved R0. The median procedure speed was 21 mm2/min. There were four (7.5 %) intraoperative perforations and one delayed bleeding; these were successfully treated endoscopically. There was no salvage surgery for complications. The R0 rate increased from 16/26 (61.5 %) for the first 26 procedures to 26/27 (96.3 %, P = 0.002) for the last 27 procedures. Conclusions DCT-ESD appears to be a safe and effective treatment for RLR colonic lesions after EMR.

Background and study aims Endoscopic submucosal dissection (ESD) of superficial colorectal lesions in close proximity to the appendiceal orifice (L-PAO) was shown to be feasible except in case of deep invasion into the appendix (type 3 of Toyonaga’s classification). This study aimed to determine the outcomes of ESD with double clip and rubber band traction (DCT-ESD) of L-PAO including a majority of type 3. Patients and methods We reviewed retrospectively all consecutive DCT-ESD of L-PAO performed in 3 French centers. Each lesion was described according to Toyonaga’s classification and type 0 lesions were excluded. The primary outcome was en bloc and R0 resection rates for L-PAO. Morbidity and salvage surgery were recorded. Results A total of 32 patients underwent DCT-ESD; 22 lesions (68.8 %) were type 3, including 11 with previous appendectomy (34.4 %). Median lesion size was 35 mm range (10–110 mm) and median duration of resection was 47 min range (10–230 min). We achieved 100 % of En bloc resection exclusively with DCT-ESD and 90.6 % of histological R0 resection rate. Per-procedure, 11 perforations occurred and were all immediately closed with clips. Overall, 3 patients (10.7 %) underwent surgery without stoma (2 complications related and 1 incomplete resection). No death occurred. Conclusion ESD of lesions deeply invading appendiceal orifice is feasible with the help of a traction system. Technical success by endoscopy avoiding surgery was achieved in 90.6 % of cases.

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Background and Aim The diagnostic evaluation and management of patients with chronic dyspepsia may differ geographically according to patient age, prevalence of Helicobacter pylori or parasitic infection, and risk of gastric cancer. The characteristics and appropriate investigation of Cambodian patients with dyspepsia have not previously been studied. The aim of this study was to investigate the characteristics of Cambodian patients with chronic dyspepsia, the yield of upper endoscopy in these patients, and the value of alarm features in identifying patients with organic causes of dyspepsia. Methods We conducted a retrospective, single‐center study of 1231 adults with chronic dyspepsia who underwent upper endoscopy. We compared clinical characteristics, H. pylori prevalence, and endoscopic and histological findings of patients with functional or organic causes of dyspepsia. This study was approved by the National Ethics Committee for Health Research. Results The majority of patients had overlapping symptoms of epigastric pain/burning and postprandial fullness/early satiety (40.6%), followed by epigastric pain/burning alone (29.7%) and postprandial fullness/early satiety alone (29.7%). Organic lesions were diagnosed in 6.9% of patients. The overall prevalence of H. pylori infection was 46% and was similar in the three clinical subgroups. The sensitivity and specificity of alarm features for organic causes of dyspepsia were 14 and 96%, respectively. The majority of patients with gastric cancer were 40 years of age or older. Conclusions The majority of patients with chronic dyspepsia seen at our outpatient center were diagnosed with functional or H. pylori‐associated dyspepsia. The presence of alarm features was not sensitive or specific for differentiating organic and functional dyspepsia.

Fig. 1 Clip and rubber band strategy to achieve resection of a sessile serrated lesion on the site of previous appendectomy. a The lesion at the appendectomy site. b Incision and trimming on the oral side. c Attachment of the first clip. d Second clip traction.