what are the causes and symptoms of colon cancer?
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['A persistent change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool.', 'Rectal bleeding or blood in your stool.', 'Persistent abdominal discomfort, such as cramps, gas or pain.', "A feeling that your bowel doesn't empty completely."]
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Colorectal cancer can occur in young adults and teenagers, but the majority of colorectal cancers occur in people older than 50. For colon cancer, the average age at the time of diagnosis for men is 68 and for women is 72. For rectal cancer, it is age 63 for both men and women.
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Nausea and vomiting can occur if a colon or rectal tumor is obstructing the bowel and inhibiting the passage of liquid or solid waste or gas. Bowel blockage can also be accompanied by painful abdominal cramps, bloating and constipation.
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['A change in bowel habits, such as diarrhea, constipation or more-frequent bowel movements.', 'Dark maroon or bright red blood in stool.', 'Narrow stool.', "A feeling that your bowel doesn't empty completely.", 'Abdominal pain.', 'Unexplained weight loss.', 'Weakness or fatigue.']
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Common symptoms include: A change in your bowel habits, such as diarrhea, constipation or more-frequent bowel movements. Dark or red blood in stool. Mucus in stool.
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But if nausea and vomiting are accompanied with other symptoms such as constipation or pain, colon cancer could be the cause. When vomiting is a symptom of colon cancer, it is usually because a tumor is causing a bowel obstruction.
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Colon cancers develop from precancerous polyps that grow larger and eventually transform into cancer. It is believed to take about 10 years for a small precancerous polyp to grow into cancer.
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Most patients developing colorectal cancer will eventually present with symptoms. Primary symptoms include rectal bleeding persistently without anal symptoms and change in bowel habit—most commonly, increased frequency or looser stools (or both)—persistently over six weeks.
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About 90 percent of colon and rectal cancer patients initially thought they had hemorrhoids because of symptoms such as rectal itching and rectal bleeding. Therefore, the belief that you have hemorrhoids could actually be a symptom of colon cancer.
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Therefore, the belief that you have hemorrhoids could actually be a symptom of colon cancer. If you are experiencing any new signs of rectal bleeding, no matter what your age, you should consult your doctor immediately, especially if it is a new symptom.
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['loss of blood (traumatic injury, surgery, bleeding, colon cancer, or stomach ulcer),', 'nutritional deficiency (iron, vitamin B12, folate),', 'bone marrow problems (replacement of bone marrow by cancer),', 'suppression by red blood cell synthesis bychemotherapy drugs,', 'kidney failure, and.']
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Are They Cancerous? Colon polyps don't usually turn into cancer, though bleeding colon polyps might be an early sign of colon cancer. In general, the larger the polyp is, the greater the risk of cancer — particularly with neoplastic polyps (which include adenomas and serrated types of polyps).
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['inflammation.', 'bloating.', 'irritable bowel syndrome.', 'glucose intolerance.', 'colon cancer.', 'food allergies.']
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['Penile cancer — cancer of the penis — might show symptoms like changes in color or thickness of the skin of your penis, or a painful sore might show up on your penis.', 'Anal cancer might cause anal bleeding, pain, itching, or discharge, or changes in bowel habits.']
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Cramps may also be associated with advanced colon cancer: As the tumor grows through the colon or bleeds, it may irritate the lining of the abdomen. Gas and Bloating: While it's normal to pass gas up to 23 times per day, excessive gas and bloating can be a sign of colon cancer.
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Most colon polyps are found during tests for colorectal cancer. Unless the polyps are large and cause bleeding or pain, the only way to know if you have polyps is to have tests that explore the inside of your colon. Several tests can be used to detect colon polyps.
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Symptoms Bowel cancer a persistent change in bowel habit – pooing more often, with looser, runnier poos and sometimes tummy (abdominal) pain.