Colon cancer affects the stool by causing alternating diarrhea and constipation, according to the American Cancer Society. This type of cancer can also cause narrowing of the stool and blood in the stool.
Black stool is often caused by bleeding in the upper gastrointestinal tract, specifically in the esophagus, stomach or small intestines, notes Healthgrades. Medication and other ingested substances, including black licorice, blueberries, iron supplements, lead and bismuth medicines such as Pepto-Bis
Colon cancer is cancer of the colon, according to Mayo Clinic. Colon cancer is also known as colorectal cancer, which refers to cancers that start in the colon and rectum. The colon is a part of the digestive system also known as the large intestine.
Mayo Clinic explains that doctors are uncertain of the cause of colon cancer. Symptoms of colon cancer include blood in the stool, weight loss that cannot be explained, reoccurring cramps in the abdomen, variations in bowel movements and fatigue. If found early, colon cancer responds successfully to
Age, race, gender, environment, diet and genetics are causative factors in the development of colon cancer, according to About.com, as are obesity, not getting enough exercise, smoking and polyps. Drinking alcohol can also place a person at risk of contracting this type of cancer.
According to Mayo Clinic, symptoms of colon cancer include rectal bleeding, persistent abdominal discomfort, unexplained weight loss, weakness or fatigue, the feeling that one's bowels do not completely empty and notable changes in bowel habits, including diarrhea or a change in consistency of stool
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.
The standard treatments for colon cancer are surgery, radiofrequency ablation, cryosurgery, chemotherapy, radiation therapy and targeted therapy, according to the National Cancer Institute. The therapy used is largely based on the stage of the cancer, which describes how extensively the disease has
Some mucus in the stool is perfectly natural, as mucus acts as a lubricant in the body, states Healthgrades. However, a great deal of mucus in the stool or mucus that is accompanied by symptoms such as blood, pain or diarrhea can indicate inflammation, bowel obstruction or cancer.
Symptoms of black stool cancer, or bowel cancer, include bloody stools, a change in bowel habits, weight loss and a cancerous lump, reports Cancer Research UK. An abnormally low level of red blood cells, or anemia, may be present as well.