Endoscopic mucosal resection (EMR) of laterally spreading tumor in rectum and resolution of late bleeding
Epublication WebSurg.com, Jan 2019;19(01). URL: http://websurg.com/doi/vd01en5508
The objectives of this video are manifold, namely to present the totally endoscopic treatment of a laterally spreading tumor in the upper rectum with a piecemeal technique, and how to act against one of its most frequent complications, post-polypectomy bleeding. Methods: The procedure was performed in an advanced flexible endoscopy unit, with the patient lying supine, with anesthesia (Propofol), and insufflation of carbon dioxide. A videocolonoscope was used, the lesion was identified and elevated with hydroxyethyl starch (Voluven). It was dried with a hot snare in parts ("piecemeal" technique), thereby achieving complete resection. The defect was closed with metal clips. The specimen was recovered for histopathological study. Results: During screening colonoscopy, a 56-year-old patient was found with a 30mm granular laterally spreading tumor of the rectum (LST-G or nodular mixed type), located 15cm from the anal verge. Complete endoscopic resection of the lesion with a curative intent was performed. On postoperative day 5, proctorrhagia presented without hemodynamic alteration. Emergency endoscopy was decided upon. Upon entering with the colonoscope, we identified a clot attached to the surgical site. Once the bleeding had been confirmed, a saline solution with 1/20,000 adrenaline was injected. And then, with a hot snare, electrocoagulation was performed in the same area, combining an injection method with a thermal one and achieving a satisfying hemostasis. The patient was discharged on the same day without any other complications. The pathology report showed a villous adenoma with low-grade dysplasia, including patches of high-grade dysplasia, and injury-free resection margins. Conclusions: EMR of laterally spreading tumors is safe, although it is not devoid of complications such as bleeding, which is present in up to 9.8 of every 100,000 polypectomies in some series (Reumkens et al., AJG 2016). It is essential to suspect and know how to solve it efficiently with the tools available at that time of emergency.