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The Top Colon Cancer Sign People Often Dismiss. Rectal bleeding is among the most common early signs of colon cancer. “Bleeding is the number one cardinal symptom ... Growths called polyps, some ...
A colorectal polyp is a polyp (fleshy growth) occurring on the lining of the colon or rectum. [1] Untreated colorectal polyps can develop into colorectal cancer. [2] Colorectal polyps are often classified by their behaviour (i.e. benign vs. malignant) or cause (e.g. as a consequence of inflammatory bowel disease).
Juvenile polyps are a type of hamartomatous polyps, which consist of a disorganized mass of tissue. They occur in about two percent of children. [2] Juvenile polyps often do not cause symptoms (asymptomatic); when present, symptoms usually include gastrointestinal bleeding and prolapse through the rectum.
The colorectal adenoma is a benign glandular tumor of the colon and the rectum. It is a precursor lesion of the colorectal adenocarcinoma (colon cancer). [1] [2] [3] They often manifest as colorectal polyps.
One study involving more than 1 million people with colon cancer from 2004 to 2015 found that 51.6% of those under 50 were diagnosed with stage three or four cancer, while 40% of people over 50 ...
For every extra year a person’s body aged faster than normal, their risk of developing colon polyps went up by 16%, according to the study.
While colon polyps are not commonly associated with symptoms, occasionally they may cause rectal bleeding, and on rare occasions pain, diarrhea or constipation. [9] They are a concern because of the potential for colon cancer being present microscopically, and the risk of benign colon polyps becoming malignant over time. [10]
As shown by Hofstad et al., [25] when polyps are allowed to remain in the colon and are observed for three years, about 40% of polyps are seen to grow larger, likely progressing towards cancer. Luo et al. [26] summarized the substantial body of evidence that field cancerization occurs in the colon, often due to aberrant DNA methylation.