Internal hemorrhoids do not usually change the shape of the stool. If a change in the shape of the stool is detected, the first thing to consider is a foreign body growth or occupancy inside the intestinal cavity. In this case, an e-colonoscopy is needed to clarify the diagnosis. E-colonoscopy is the easiest and fastest way to check the entire intestine for foreign body growths and inflammatory reactions. Before the e-colonoscopy, the intestine is usually prepared by taking a laxative such as oral compounded polyethylene glycol electrolyte or castor oil. To have an e-colonoscopy, you can choose either a normal or a painless method. Painless means that the examination is performed after anesthetic drugs are given intravenously. If a tumor or a polyp is found in the intestinal cavity, prompt treatment is usually required. If there is a tumor, the appropriate treatment plan will be chosen according to the staging of the tumor. If there are polyps, the appropriate response is usually taken according to the size of the polyps.