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Background: Additional surgery is recommended when early colorectal cancer (ECRC) is resected by non-curative endoscopic submucosal dissection (ESD) and there is significant risk of lymph node metastasis (LNM). The aim of this study was to investigate the efficacy and safety of additional surgery after non-curative ESD for ECRC and evaluate long-term outcomes.Methods: Patients with ECRC who underwent ESD and additional surgery between July 2007 and November 2013 were identified. Histology and patient data were collected during an average period of more than 5 years to determine tumor stage and type, resection status, complications, tumor recurrence, and distant metastasis.Results: Fifty-one patients who underwent additional surgery were eligible for analysis. Overall, regional LNM was detected in 5 patients (9.8%) and presence of lymphovascular infiltration was a significant risk factor. Surgery-related complications occurred in 3 patients (5.9%). During a median follow-up period of 59 months, no metastasis or local recurrence was observed. Three patients died of other diseases and no CRC-related deaths took place.Conclusions: Additional surgery after non-curative ESD for ECRC is effective and safe and should be encouraged to foster curative treatment and better long-term outcomes. [ABSTRACT FROM AUTHOR]

Background: An increasing number of studies have been conducted on the use of endoscopic ultrasound (EUS)-guided needle sampling for upper gastrointestinal subepithelial lesions (SEL). However, reported diagnostic efficacy varies greatly.Objective: To summarize up current evidences on the diagnostic efficacy of EUS-guided needle sampling for upper GI SEL.Method: A reproducible strategy was used to search four databases. Search results were evaluated for eligibility, and the quality of eligible studies was assessed by QUADAS-2. Pooled efficacy of EUS-guided needle sampling in upper GI SEL was calculated. Procedure-related complications, diagnostic errors, and independent factors related to a higher success rate were also recorded and analyzed.Results: Seventeen studies, comprising 978 attempts of EUS-guided needle sampling, were included in a meta-analysis. Pooled diagnostic rate of EUS-guided needle sampling was 59.9 %, with a heterogeneity I (2) of 55.2 %. Subgroup analysis showed no difference in diagnostic rate among fine needle aspiration (FNA), trucut needle biopsy (TCB), and fine needle biopsy (FNB), or among 19-, 22-, and 25-G needles. Subgroup analysis and meta-regression suggested that the cell block method might be correlated with a higher diagnostic rate. Few severe complications were reported. Diagnosis errors were rare.Conclusion: EUS-guided needle sampling is a safe, but only moderately effective method for pathology diagnosis of upper GI SEL. Choice of FNA/TCB/FNB, or 19 G/22 G/25 G does not seem to alter the overall diagnostic rate. [ABSTRACT FROM AUTHOR]

Background & Aims Although endoscopic submucosal dissection (ESD) of colorectal carcinoids is increasing, little is known about long-term outcomes of patients. We investigated the efficacy and safety of ESD of colorectal carcinoids and evaluated long-term outcomes, including local recurrence and metastasis. Methods We performed a retrospective analysis of data collected from 239 consecutive patients with colorectal carcinoids <20 mm who underwent endoscopic ultrasonography (to evaluate the size of tumor and the depth of invasion), followed by ESD from January 2007 through October 2012 at the Zhongshan Hospital of Fudan University. Histology and patient data were collected during a median follow-up period of 52 months (range, 25–94 months) to determine tumor stage and type, completeness of resection, complications, tumor recurrence, and distant metastasis. Results En bloc resection was achieved for all of the 239 treated lesions; tumor tissues were completely resected for 216 of the lesions (90.38%). Eight patients had ESD-related complications (3.35%). As more ESDs were performed by endoscopists, the rate of complete tumor resection increased, and the rate of complications decreased. ESD of carcinoids in colon increased the risk of non-R0 resection and the rate of complications. During the follow-up period, all patients remained free from local recurrence. However, distant metastases were detected in 6 patients (2.51%); lymphovascular invasion was a risk factor for metastasis. Conclusions ESD is effective for the resection of rectal carcinoids <20 mm and causes complications in less than 4% of patients. ESD for colonic carcinoids is feasible but associated with a higher non-R0 resection rate and a trend toward higher complications risk. Tumor features and stage determine risk for distant metastasis, so long-term follow-up is essential. [ABSTRACT FROM AUTHOR]

Background and Study Aims: Submucosal tunneling endoscopic resection (STER) has become a potential option for the endoscopic treatment of a selected group of patients with submucosal tumors (SMTs) originating from the muscularis propria layer in the upper gastrointestinal tract. The aim of this retrospective study was to analyze the incidence and management of STER-related complications.Patients and Methods: From January 2011 to August 2013, 290 patients with upper gastrointestinal SMTs treated by STER were included in the study. Clinicopathological characteristics and complication data were collected and analyzed retrospectively.Results: Mucosal injury occurred in three cases (1.0 %) and major bleeding occurred in five cases (1.7 %). The gas-related complications were very common; however, only nine cases of major pneumothorax (> 30 % lung collapse) needed therapeutic intervention (3.1 %). Thoracic effusion occurred in 49 patients, 11 of whom had low grade fever or segmental atelectasis that required thoracentesis and drainage (3.8 %). Thus, although the overall incidence of complications was 23.4 % (68/290), only 10.0 % of procedures (29/290) required intervention for complications. Based on the statistical analysis, irregular shape, tumor in the deep muscularis propria layer, long procedure time, and air insufflation were risk factors of STER-related major complications.Conclusion: Although the incidence of STER-related complications was relatively high, most of these complications were minor and did not require therapeutic intervention. STER is a safe technique for the treatment of upper gastrointestinal SMTs. [ABSTRACT FROM AUTHOR]

Background and Study Aims: Although peroral endoscopic myotomy (POEM) is credited with high success rates in the treatment of achalasia, persistent/recurrent symptoms may occasionally develop afterwards. Our purpose was to evaluate the feasibility, safety, and efficacy of repeat peroral endoscopic myotomy (Re-POEM) as salvage therapy after initial POEM failure.Patients and Methods: Fifteen patients with persistence/recurrence of symptoms after previous POEM (Eckardt symptom score ≥ 4) were retrospectively selected from a prospectively maintained database housing a total of 1454 consecutive patients with achalasia. The primary endpoint was symptom relief during follow-up, defined by an Eckardt score of ≤ 3. Secondary outcome measures were procedure-related adverse events, change in manometric lower esophageal sphincter (LES) pressure, and reflux symptoms before and after Re-POEM.Results: All patients underwent successful Re-POEM a mean of 13.5 months (range 4 - 37 months) after execution of their primary POEM procedures. Mean operative time was 41.5 minutes (range 28 - 62 minutes). One instance of submucosal tunnel infection was successfully managed with conservative treatment. During a mean follow-up period of 11.3 months (range 3 - 18 months), therapeutic success was achieved in all patients. The mean symptom score pretreatment was 5.6 (range 4 - 8), compared with a post-treatment mean of 1.2 (range 0 - 3; P < 0.001). Mean LES pressure also declined from 25.0 mmHg to 9.5 mmHg after Re-POEM (P < 0.001). The overall clinical reflux complication rate of Re-POEM was 33.3 %.Conclusions: Re-POEM appears safe and effective as a salvage option after initial POEM failure, conferring short-term symptom relief and being free of serious complications in all patients. [ABSTRACT FROM AUTHOR]