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Gel immersion endoscopy-facilitated endoscopic mucosal resection of a superficial nonampullary duodenal epithelial tumor: a novel approach.

ABSTRACT: Video 1Gel immersion endoscopy-facilitated endoscopic mucosal resection of a superficial nonampullary duodenal epithelial tumor.

SUBMITTER: Miyakawa A

PROVIDER: S-EPMC8431274 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Gel Immersion Endoscopic Mucosal Resection (EMR) for Superficial Nonampullary Duodenal Epithelial Tumors May Reduce Procedure Time Compared with Underwater EMR (with Video)

Project description:Materials and Methods This was a retrospective cohort study conducted in two municipal hospitals. We identified 24 patients with SNADETs of 3–18 mm in diameter who underwent UEMR or GIEMR. One lesion was excluded from the analysis because it was found to be in the stomach after surgery. The primary outcome was procedure time. Results GIEMR significantly reduced the procedure time compared with UEMR (5 min vs. 10 min, P = 0.016). There was no significant difference between the UEMR and GIEMR groups for en bloc resection rate (93% vs. 100%, P = 1.0) and R0 resection rate (57% vs. 80%, P = 0.39). No serious complications were observed in either group. Conclusions GIEMR of SNADET has the potential to reduce procedure time compared with UEMR and may be particularly effective in areas where immersion in water is difficult.

| S-EPMC9217606 | biostudies-literature

Under-gel Endoscopic Mucosal Resection without Injection: A Novel Endoscopic Treatment Method for Superficial Nonampullary Duodenal Epithelial Tumors.

Project description: Not available

| S-EPMC8580686 | biostudies-literature

Endoscopic hemostasis using gel immersion endoscopy for duodenal ulcer and a sigmoid colon polyp: A novel gel injection method.

Project description:Gel immersion endoscopy (GIE) has gained prominence for securing a good visual field. Traditionally, OS-1 jelly (Otsuka Pharmaceutical Factory) has been used for GIE. However, due to the presence of electrolytes, it is unsuitable for endoscopic hemostasis using a monopolar device. Therefore, VISCOCLEAR (Otsuka Pharmaceutical Factory), a new gel that does not contain electrolytes, has been developed. Moreover, unlike water or saline, VISCOCLEAR does not readily mix with blood, making it effective in visualizing gastrointestinal bleeding. We report two cases in which GIE was performed using a novel gel injection method.

| S-EPMC9667408 | biostudies-literature

Efficacy and Safety of Gel Immersion Endoscopic Mucosal Resection for Non-Pedunculated Colorectal Polyps.

Project description:Underwater endoscopic mucosal resection (UEMR) has become a popular endoscopic resection method for large colorectal neoplasms. However, visualization can be poor during UEMR due to the presence of intestinal fluid. Gel immersion endoscopic mucosal resection (GIEMR), using a specially developed gel (Viscoclear®, Otsuka Pharmaceutical Factory, Tokushima, Japan), can improve the visual field. However, reports of GIEMR for colorectal polyps are limited. Herein, we evaluated the short-term outcomes of GIEMR for non-pedunculated colorectal neoplasms (NPCRN). This single-center, retrospective, and observational study includes 25 lesions in 20 patients with NPCRN who underwent GIEMR between January and October 2022. The short-term outcomes and adverse events were evaluated. The lesion locations were as follows: right colon, 18 lesions; left colon, 7 lesions; and rectum, none. The median tumor diameter was 15 (IQR, 10-18) mm. Histological classification was as follows: sessile serrated lesion, 9 cases; adenoma, 12 cases; and intramucosal adenocarcinoma, 4 cases. The overall en bloc resection rates and R0 resection rates were 80% (20/25) and 72% (18/25). For NPCRN in 10-19 mm, the en bloc resection rate was 75% (12/16), with an R0 resection rate of 69% (11/16). No post-polypectomy bleeding, perforation, or post-coagulation syndrome were observed. The findings of our study provide preliminary evidence of the efficacy and safety of GIEMR for NPCRN. Therefore, GIEMR may be a promising novel endoscopic resection method for NPCRN.

| S-EPMC10051202 | biostudies-literature

A case of laparoscopy and endoscopy cooperative surgery for circumferential superficial nonampullary duodenal epithelial tumor.

Project description: Not available

| S-EPMC7650229 | biostudies-literature

Efficacy and safety of underwater endoscopic mucosal resection for ≤20 mm superficial non-ampullary duodenal epithelial tumors: Systematic review and meta-analysis.

Project description:Background and aimsSuperficial non-ampullary duodenal epithelial tumors (SNADETs) as a rare disease have gradually increased in recent years. Underwater endoscopic mucosal resection (UEMR) has emerged as a newly available option for the endoscopic resection of SNADETs. This study aimed to evaluate the efficacy and safety of UEMR for ≤20 mm SNADETs.MethodsA literature search was performed across multiple databases, including PubMed, Embase, Scopus, and Clinical trials for studies containing tumors ≤20 mm published from January 1, 2012, to August 8, 2022. Outcomes examined were the pooled rates of en bloc resection, R0 resection, adverse events, and recurrence. Subgroup analyses of the resection rate were conducted stratified by sample size and polyp size.ResultsA total of 10 studies with UEMR performed in a total of 648 tumors were included for analysis. The pooled rate of en bloc resection and R0 resection was 88.2% (95% confidence interval (CI): 82.1-93.2) and 69.1% (95% CI: 62.2-76.1), respectively. The results showed pooled rate of intraoperative bleeding rate was 2.9% (95% CI: 0-9.0), delayed bleeding rate was 0.9% (95% CI: 0.1-2), recurrence rate was 1.5% (95% CI: 0-4.9). In the subgroup analysis, R0 and en-bloc resection rates were significantly higher in <10 mm than 10-20 mm SNADETs subgroups (R0 resection rate 83.1 vs. 48.6%; en bloc resection rate 100.0 vs. 84.0%, P < 0.05).ConclusionUnderwater endoscopic mucosal resection was an effective and safe technique for the optional treatment for ≤20 mm SNADETs, especially of <10 mm.Systematic review registrationhttps://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022340578.

| S-EPMC9853979 | biostudies-literature

A case of duodenal polyp at superior duodenal angle successfully treated by cap-assisted endoscopic mucosal resection.

Project description: Not available

| S-EPMC7730507 | biostudies-literature

Underwater endoscopic mucosal resection of an incompletely resected superficial non-ampullary duodenal epithelial neoplasm using the loop-and-let-go technique: A case report.

Project description:RationaleEndoscopic resection of superficial non-ampullary duodenal epithelial neoplasm (SNADEN) is a challenging procedure owing to the high recurrence rate and considerable incidence rate of adverse events.Patient concernsSNADEN accidentally found during a medical examination in a 56-year-old man.DiagnosisThe patient was diagnosed as having a 20-mm-sized flat elevated SNADEN at the superior duodenal angle.InterventionsFirst, we tried to perform conventional EMR (CEMR). However, the submucosal injection interrupted the endoscopic view and did not provide enough space for CEMR because of its angulated location. Therefore, we chose to perform endoscopic resection using the "loop-and-let-go" technique. Follow-up duodenoscopy after 2 days revealed post CEMR ulcer with suspicious remnant lesion. Underwater endoscopic mucosal resection (UEMR) was successfully performed 3 months after the first session of endoscopic resection.OutcomesComplete endoscopic en bloc resection and histological complete resection were achieved with UEMR. Follow-up duodenoscopy revealed no recurrence.LessonsStep-by-step endoscopic treatment with UEMR following loop-and-let-go technique may be a good strategy for SNADEN over 20-mm in diameter.

| S-EPMC7808504 | biostudies-literature

A novel gel immersion technique using a bipolar needle-knife in endoscopic submucosal dissection for superficial gastrointestinal neoplasms.

Project description: Not available

| S-EPMC5825959 | biostudies-literature

Efficacy of gel immersion endoscopic ultrasonography for delineating the duodenal papilla and pancreatobiliary ducts: A retrospective study with video.

Project description:ObjectivesEndoscopic ultrasonography is an important examination for periampullary diseases. The duodenum is filled with water to ensure a clear image and distend the duodenal wall without burying the papilla within duodenal folds; however, peristalsis frequently makes it difficult to maintain water within the duodenum. The gel immersion method (intestine is filled with viscosity gel) has recently been attracting attention. We evaluated the usefulness of using this method for endoscopic ultrasonography to detect and delineate the major duodenal papilla.MethodsFifty-nine consecutive patients who underwent gel immersion-endoscopic ultrasonography between February and March 2021 were included retrospectively. The papilla was observed by filling the duodenum with clear viscosity gel. Outcomes were the rate of duodenal distention, delineation rates of the papilla, the time required for delineation, volume of the gel used, and adverse events.ResultsDuodenal distention was excellent, good, and poor in 58%, 34%, and 7% of cases, respectively. The delineation rates of the papilla in the axial and longitudinal views were 98% and 66%, respectively. The median time required to delineate the papilla in each view was 3.1 (range, 1.0-1.4) and 7.9 (1.9-28.6) min; the median volume of the gel used was 80 (30-150) ml and 100 (50-200) ml, respectively. No adverse events were noted.ConclusionsGel immersion-endoscopic ultrasonography provided sufficient duodenal distention, leading to high rates of detection and delineation of the papilla using a small volume of gel within a short time. This method may be useful for the evaluation of the ampullary region.

| S-EPMC9353120 | biostudies-literature

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