Most of the polyps seen during colonoscopy can be removed in the same session. Although the technique of each gastroenterologist shows slight differences, the method applied is basically the same. After grasping the polyp stem with a ring-shaped instrument called a polypectomy snare, it is cut and removed using electric current.
This procedure is called polypectomy. The inner surface of the intestine is insensitive to cutting or burning events, so no discomfort is felt during the procedure. The cut polyp is then sent to the pathology laboratory and examined under a microscope to determine what type of polyp it is and whether there are signs of transformation into cancer.
Polypectomy performed during colonoscopy is a procedure that can be performed on outpatients. Although rare, bleeding may occur from the site of the polypectomy. Another risk is the tearing of the same place (perforation), albeit very rarely. Bleeding that does not stop is stopped by intervention during colonoscopy, but rarely bleeding can occur a few days or weeks after polypectomy.
For this reason, drugs such as aspirin, plavix and coumadin that may make blood clotting difficult should be discontinued at least 5 days before polypectomy and coagulation tests should be performed when necessary. The rupture of the intestinal wall (perforation) during polypectomy is a very rare condition and almost always requires surgical intervention.