Wide grooves in the shape of the stool are usually considered abnormal and may be caused by diseases such as hemorrhoids, intestinal polyps, and colorectal cancer. Wide grooves in the shape of the stool indicate a change in the nature of the stool, which may be caused by hemorrhoids, intestinal polyps, colorectal cancer and other diseases. In the case of internal hemorrhoids, the presence of hemorrhoids in the intestinal lumen may affect the normal discharge of stool during defecation, causing wide grooves in the stool. In addition, large intestinal polyps or colorectal cancer masses can squeeze the stool and cause it to change shape, resulting in wide grooves in the stool. It is advisable to consult a medical professional if you have wide grooves in your stool to avoid delays.