Quantcast Colorectal Cancer Overview

Colorectal Cancer


Colon cancer is cancer that forms in the tissues of the first part of the large intestine. Rectal cancer is a malignancy that develops in the rectum, which along with the anal canal, makes up the last 6- to 8-inch part of the large intestine.  These cancers are often referred to together as colorectal cancer. Among the most common forms of cancer diagnosed in the United States, an estimated 135,430 people in the United States are expected to be diagnosed with these cancers and 50,260 are expected to die of these diseases in 2017, according to federal estimates.​

Screening for colorectal cancer, the second leading cause of cancer death in the United States, by colonoscopy can both detect these cancers at an early stage, when successful treatment is more likely, and prevent them from developing in the first place, by detecting and removing precancerous polyps during colonoscopy.

If everyone followed colorectal cancer screening guidelines, at least 60 percent of U.S. colorectal cancer deaths could be avoided, according to a major study published in the New England Journal of Medicine in 2012. Unfortunately, it is estimated that one in every three U.S. adults is not getting screened as recommended, according to a U.S. Centers for Disease Control and Prevention analysis. Risk factors for colorectal cancer include family history, certain hereditary conditions, ulcers in the lining of the large intestine, and a personal history of polyps in the colon or rectum.

Source: National Cancer Institute​

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