12 years.
Many years: Patients can present with stage-4 colon cancer. This takes many years(10+) years to evolve. But early colon cancer treated with surgery can alter relapse as stage -4 disease. This can happen in a shorter time, anywhere from one to 5 years.. ...Read more. Get help from a doctor now ›. A long time: Colon cancer is unusual in that it follows the polyp-to-cancer sequence. Colon cancer does NOT develop with a single genetic mistake from normal to full blown cancer like many others (breast, prostate). The process usually takes an average of 12 years. Abnormal growths in the colon or rectum Most colorectal cancers develop slowly over several years. Before a cancer develops, a growth of tissue or tumor usually begins as a non-cancerous polyp on the inner lining of the colon or rectum. Start and spread of colorectal cancer If cancer forms in a polyp, it can eventually begin to grow into the wall of the colon or rectum. When cancer cells are in the wall, they can then grow into blood vessels or lymph vessels. In those with Crohn's disease 2% get colorectal cancer after 10 years, 8% after 20 years, and 18% after 30 years. In those with ulcerative colitis approximately 16% develop either a cancer precursor or cancer of the colon over 30 years. Globally, colorectal cancer is the third most common type of cancer making up about 10% of all cases. In 2012 there were 1.4 million new cases and 694,000 deaths from the disease. It is more common in developed countries, where more than 65% of cases are found. That’s right. Colon cancer doesn’t always sneak up on your large bowel. It may take years to develop since most of the time it rises from suspicious polyps. In some cases, signs and symptoms may be overlooked. Most colorectal cancers start as polyps and take few years to develop. Colon cancer is the third most diagnosed cancer in the United States for men and women. It is also the most fatal cancer among those who are non-smoker Start and spread of colorectal cancer If cancer forms within a polyp, it can eventually begin to grow into the wall of the colon or rectum. When cancer cells are in the wall, they can then grow into blood vessels or lymph vessels. Lymph vessels are thin, tiny channels that carry away waste and fluid. People who have had IBD for many years often develop dysplasia. Dysplasia is a term used to describe cells in the lining of the colon or rectum that look abnormal (but not like true cancer cells) when seen under a microscope. These cells can change into cancer over time. Abnormal growths in the colon or rectum Most colorectal cancers develop slowly over several years. Before a cancer develops, a growth of tissue or tumor usually begins as a non-cancerous polyp on the inner lining of the colon or rectum. A tumor is abnormal tissue and can be benign (not cancer) or malignant (cancer). People who have had IBD for many years often develop dysplasia. Dysplasia is a term used to describe cells in the lining of the colon or rectum that look abnormal (but not like true cancer cells) when seen under a microscope. These cells can change into cancer over time.
https://www.healthtap.com/topics/how-long-does-it-take-colon-cancer-to-develop http://www.cancer.org/acs/groups/cid/documents/webcontent/003096-pdf.pdf https://en.wikipedia.org/wiki/Colon_cancer https://www.floridahospital.com/blog/did-you-know-polyps-can-take-years-develop-colon-cancer http://www.cancer.org/acs/groups/cid/documents/webcontent/003170-pdf.pdf http://www.cancer.org/acs/groups/cid/documents/webcontent/003170-pdf.pdf
how many years for colon cancer to develop