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Transforming outcomes: the pivotal role of self-expanding metal stents in right- and left-sided malignant colorectal obstructions-bridge to surgery: a comprehensive review and meta-analysis
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Sheza Malik, Priyadarshini Loganathan, Hajra Khan, Abul Hasan Shadali, Pradeep Yarra, Saurabh Chandan, Babu P. Mohan, Douglas G. Adler, Shivangi Kothari
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Clin Endosc 2025;58(2):240-252. Published online February 3, 2025
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DOI: https://doi.org/10.5946/ce.2024.120
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Graphical Abstract
Abstract
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- Background
/Aims: Self-expanding metallic stents (SEMS) are an alternative to emergency surgery (ES) for malignant colorectal obstruction. This study aimed to compare surgical outcomes between SEMS as a bridge to surgery (BTS) and ES in patients with malignant colorectal obstruction.
Methods A comprehensive database search was conducted until October 2023 to compare outcomes between SEMS as a BTS and ES. A subgroup analysis of results by malignancy site was performed.
Results We analyzed 57 studies, including 7,223 patients over a mean duration of 35.4 months. SEMS as a BTS showed clinical and technical success rates of 88.0% (95% confidence interval [CI], 86.1%–90.1%; I2=68%) and 91.6% (95% CI, 89.7%–93.7%; I2=66%), respectively. SEMS as a BTS revealed reduced postoperative adverse events (odds ratio [OR], 0.51; 95% CI, 0.41–0.63; I2=70%; p<0.001) and 30-day mortality (OR, 0.52; 95% CI, 0.37–0.72; I2=10%; p<0.001) compared to ES. Subgroup analysis showed postoperative mortality of 5% and 1.5% for left- and right-sided malignancies, respectively. Adverse events were 15% and 33% for the right and left colon, respectively.
Conclusions SEMS as a BTS demonstrated a higher success rate, fewer postoperative adverse events, and a reduced 30-day mortality rate than ES, supporting its use as the preferred initial intervention for right- and left-sided obstructions and indicating broader clinical adoption.
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Comparison of peroral endoscopic myotomy, laparoscopic Heller myotomy, and pneumatic dilation for patients with achalasia: a United States national experience
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Dushyant Singh Dahiya, Bhanu Siva Mohan Pinnam, Saurabh Chandan, Hassam Ali, Manesh Kumar Gangwani, Amir Humza Sohail, Dennis Yang, Amit Rastogi
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Clin Endosc 2025;58(1):153-157. Published online December 24, 2024
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DOI: https://doi.org/10.5946/ce.2024.103
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Cold snare polypectomy versus cold endoscopic mucosal resection for small colorectal polyps: a meta-analysis of randomized controlled trials
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Vishali Moond, Priyadarshini Loganathan, Sheza Malik, Dushyant Singh Dahiya, Babu P. Mohan, Daryl Ramai, Michele McGinnis, Deepak Madhu, Mohammad Bilal, Aasma Shaukat, Saurabh Chandan
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Clin Endosc 2024;57(6):747-758. Published online August 23, 2024
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DOI: https://doi.org/10.5946/ce.2024.081
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Graphical Abstract
Abstract
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- Background
/Aims: Cold snare polypectomy (CSP) is routinely performed for small colorectal polyps (≤10 mm). However, challenges include insufficient resection depth and immediate bleeding, hindering precise pathological evaluation. We aimed to compare the outcomes of cold endoscopic mucosal resection (CEMR) with that of CSP for colorectal polyps ≤10 mm, using data from randomized controlled trials (RCTs).
Methods Multiple databases were searched in December 2023 for RCTs reporting outcomes of CSP versus CEMR for colorectal polyps ≤10 mm in size. Our primary outcomes were rates of complete and en-bloc resections, while our secondary outcomes were total resection time (seconds) and adverse events, including immediate bleeding, delayed bleeding, and perforation.
Results The complete resection rates did not significantly differ (CSP, 91.8% vs. CEMR 94.6%), nor did the rates of en-bloc resection (CSP, 98.9% vs. CEMR, 98.3%) or incomplete resection (CSP, 6.7% vs. CEMR, 4.8%). Adverse event rates were similarly insignificant in variance. However, CEMR had a notably longer mean resection time (133.51 vs. 91.30 seconds).
Conclusions Our meta-analysis of seven RCTs showed that while both CSP and CEMR are equally safe and effective for resecting small (≤10 mm) colorectal polyps, the latter is associated with a longer resection time.
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Prevalence of intestinal metaplasia, dysplasia, and esophageal adenocarcinoma in patients with irregular Z-line: a systematic review and meta-analysis
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Vishali Moond, Pradeep Yarra, Mannat Bhatia, Sheza Malik, Vineel Malavarappu, Hassam Ali, Saurabh Chandan, Douglas G. Adler, Babu P. Mohan
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Received August 4, 2024 Accepted November 18, 2024 Published online March 31, 2025
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DOI: https://doi.org/10.5946/ce.2024.211
[Epub ahead of print]
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Graphical Abstract
Abstract
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- Background
/Aims: The irregular Z-line, defined as a segment of columnar mucosa less than 1 cm in the distal esophagus, is often biopsied despite guidelines advising against it due to a low risk of progression to esophageal adenocarcinoma (EAC). However, the clinical significance of an irregular Z-line remains unclear. This meta-analysis examines the prevalence of Barrett’s esophagus, dysplasia, and EAC in patients with an irregular Z-line.
Methods We searched Medline, Embase, and Scopus databases up to October 2023 for studies on the prevalence of Barrett’s esophagus, dysplasia, and EAC in these patients. A random-effects model was used for meta-analysis, and heterogeneity was assessed using I2 statistics.
Results Nine studies involving 17,637 patients were analyzed. Among those with an irregular Z-line, the prevalence of intestinal metaplasia was 29.4%. In patients with intestinal metaplasia, dysplasia was found in 6.2%, low-grade dysplasia in 5.9%, high-grade dysplasia in 1.6%, and EAC in 1.5%. These rates were higher compared to those without intestinal metaplasia.
Conclusions Patients with an irregular Z-line and intestinal metaplasia may be at higher risk and could benefit from endoscopic surveillance. Further studies are needed to determine the necessity of biopsying irregular Z-lines.
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