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There are five major stages of colon cancer: 0, I, II, III and IV. Stages II through IV are also divided into substages that indicate how the cancer has spread within each stage, according to the National Cancer Institute.


Stage IV colon cancer is when the cancer has spread through the lymph nodes and the blood to other parts of the body, such as the lung, liver, ovaries or abdominal wall, according to the National Cancer Institute. Stage IV colon cancer is composed of stage IVA and stage IVB.


Blood in the stool and a change in bowel habits that refuses to go away are signs of colon cancer that no one should ignore. Often, people with colon cancer do not experience any symptoms in the early stages, so it is crucial to heed these warnings, notes Mayo Clinic.


Colon cancer patients usually experience no symptoms in the early stages of the disease, explains WebMD. Warning signs which appear as the disease progresses include changes in bowel movements, such as frequent constipation or diarrhea, pencil-like stools, abdominal discomfort, bloody stool, and une


The first signs of colon cancer that patients notice include a change in their stool consistency or bowel habits, or blood in their stool, according to Mayo Clinic. Other signs and symptoms include feeling that the bowel does not empty completely, fatigue or weakness, or weight loss for no reason.


Colon cancer can break away and spread, or metastatize, to the lungs, explains PubMed Central. The cancer spreads through the lymphatic or blood system, states the Cancer Treatment Centers of America.


Five signs of colon cancer are weight loss, constipation, abdominal pain, nausea and a change in the shape or appearance of stools, according to MedicineNet. The exact symptoms produced depend on the location of the tumor within different parts of the colon.


Symptoms that are mistaken for colon cancer include the symptoms of irritable bowel syndrome, Crohn's disease and diverticulosis, according to Mayo Clinic, WebMD, the American Cancer Society and MedicineNet. They include constipation, diarrhea, a change in the consistency of the stool, persistent cr


Some types of colorectal cancer are hereditary and caused by genetic abnormalities or mutations. Familial adenomatous polyposis and hereditary nonpolyposis colorectal cancer are the most common types of inherited colorectal cancers, according to WebMD.


Most polyps are benign or noncancerous, according to the American Cancer Society. However, some types of polyps can lead to colon cancer, depending on the type of polyp and certain risk factors.