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Create a Free AccountAnatomy - Colorectal
Wide-field endoscopic mucosal resection of laterally spreading rectal tumors using a multiband ligation endoscopic mucosal resection technique
Advanced tissue resection techniques such as EMR and endoscopic submucosal dissection (ESD) have been established as therapeutic options for the management of advanced mucosal neoplasia of the colon. EMR has been found to safely and effectively remove sessile or flat neoplasms confined to the superficial layers of the GI tract.1Traction-assisted endoscopic submucosal dissection for a previously tattooed colonic laterally spreading tumor
Endoscopic tattooing is widely performed for preoperative marking; however, colorectal endoscopic submucosal dissection (ESD) after tattooing is challenging because of the dark endoscopic visual field and severe fibrosis at the submucosa.1-4 Previous studies have demonstrated the efficacy of the traction method in colorectal ESD.5,6 Moreover, recent reports have described traction-assisted ESD for technically challenging colorectal cases, such as those involving the appendiceal orifice or diverticulum.Double-tunneling butterfly method for endoscopic submucosal dissection of extensive rectal neoplasms
Endoscopic submucosal dissection (ESD) is the preferred technique for en bloc resection of superficial colorectal neoplasms. Resection of extensive lesions with ESD can be challenging, owing to loss of orientation in the submucosal space. In this case series, we describe the double-tunneling (DoT) butterfly method for ESD of extensive rectal neoplasms.Combination of immersion in saline solution, pocket-creation method, water-jet hydrodissection, and hybrid knife “probe mode” simplifies endoscopic submucosal dissection in giant rectal polyp
Laterally spreading tumors (LSTs) of the nongranular pseudopressed type and LSTs of the granular mixed type have a high risk of submucosal invasion, so it is advisable to resect them en bloc in order to perform an adequate histologic study.1 Endoscopic submucosal dissection (ESD) allows optimal endoscopic treatment of this type of lesion. This technique is difficult to perform when the lesion is giant. There are different methods to facilitate ESD, such as immersion in saline solution2 and the pocket-creation method.Rectal reconstruction after endoscopic submucosal dissection for removal of a giant rectal lesion
Endoscopic submucosal dissection (ESD) allows en bloc removal of large GI-tract lesions.1-3 However, removal of large tumors creates big mucosal defects, which can cause delayed bleeding and delayed perforation.4-6 In addition, resection of circumferential or nearly circumferential tumors can result in subsequent stenosis, requiring endoscopic dilation, placement of stents, or even surgical correction.7-10Single tunneling technique for treatment of giant laterally spreading tumor with endoscopic submucosal dissection
Colorectal endoscopic submucosal dissection (ESD) is effective and provides en bloc removal of even large colorectal lesions. Because of the anatomic characteristics of the colon (eg, narrow lumen and thin walls), it may be difficult to carry out a successful colorectal ESD, especially when the lesion is huge.Underwater endoscopic resection: an alternative for difficult colorectal polyps
Underwater endoscopic resection can be an alternative to standard resection techniques to remove difficult colorectal polyps. This video shows 4 cases of underwater resection of large colorectal polyps.
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