Having grooves in the stool for 5 years is not necessarily bowel cancer, other causes can cause grooves in the stool, such as hemorrhoids, and there is also a good chance that it is just normal stool. Normal bowel is irregular, so normal stool is not round, but in diamond or polygonal shape, etc.. If the patient has internal hemorrhoids, the hemorrhoids are very large and occupy a certain intestinal lumen position, the discharged stool has grooves. If the stool has grooves and is accompanied by nausea, vomiting, abdominal pain, bloating, constipation, diarrhea, blood in stool, etc., then it is possible to suffer from bowel cancer. Because blood in stool is a more important signal of bowel cancer. Therefore, if you have the above symptoms, please go to the hospital in time for examination, such as electronic colonoscopy, which is used to observe the lesions in the intestines and make a clear diagnosis, so as to carry out the next step of treatment. If bowel cancer has been diagnosed, it is necessary to further improve the examination to determine the clinical stage, early diagnosis and early treatment, and during the treatment period, patients should maintain a positive treatment mentality.