Overview

The colon is also called the large intestine, which is a 5 feet long, tube-like organ in the digestive tract, which absorbs water from the stool. Colon cancer usually begins when non-cancerous polyps in the lining of the colon become cancerous over a period of time. While there is no certain cause for colon cancer, adapting to a healthier lifestyle reduces your risk.

Compared to other countries, the instances of colon cancer are much lesser in India. It is often grouped together with rectal cancer as they have many similar features and called colorectal cancer.

Colon cancer

Compared to other countries, the instances of colon cancer are much lesser in India. It is often grouped together with rectal cancer as they have many similar features and called colorectal cancer.

Risk factors
  • Older age, specifically over the age of 50, puts you at greater risk of colon cancer
  • A personal history of colorectal polyps or colorectal cancer, like certain types of polyps known as ‘adenomatous polyps’ (adenomas) or you have had colorectal cancer earlier, increases your chances of developing new cancers in other areas of the colon and rectum
  • A personal history of inflammatory bowel disease (IBD) like ulcerative colitis or Crohn’s disease ( types of inflammatory bowel diseases), increases your risk of developing colorectal cancer
  • A family history of colorectal cancer in first degree relatives (parent, sibling, or child), especially if they developed it at a young age, increases your risk for colorectal cancer
  • Inherited genetic syndromes passed through your family can increase your risk of colon cancer. These syndromes include familial adenomatous polyposis and hereditary nonpolyposis colorectal cancer (Lynch syndrome)
  • Obesity due to unhealthy eating and sedentary lifestyle increases risk not only for Colon cancer but multiple other diseases
  • Smoking and exposure to secondhand smoke increases your risk of colon cancer
  • Type 2 diabetes and insulin resistance, may increase your risk of colon cancer
  • Excessive alcohol consumption increases risk not only for colon cancer but multiple other diseases
  • An unhealthy diet that has high amounts of red and processed meats increases the risk of colon cancer
  • Radiation therapy directed at the abdomen to treat previous cancers may increase your chances of developing colon cancer
Stages of Colon Cancer

Colon cancer typically doesn’t cause obvious symptoms in the earlier stages, making early detection difficult without screening tests.

Colon cancer has five stages.

Stage 0 or Carcinoma in situ: Abnormal cells are limited to the innermost lining of the colon, where they started and have not spread elsewhere.
Stage I:Cancer has formed in the innermost lining and has spread to the muscular layer of the colon. It has not spread to other nearby tissues or lymph nodes.
Stage II: Cancer has grown through the wall of the colon or rectum into the lining of the abdomen and nearby structures. It has not spread to the nearby lymph nodes or elsewhere.
Stage III: Cancer has grown into the intestinal muscles and spread to lymph nodes but not to distant parts of the body.
Stage IV: Cancer has spread to distant organs.

Screening for Colon Cancer

Fecal immunochemical test (FIT) is a screening test used for detecting colon cancer. Blood vessels in larger colorectal polyps (abnormal tissue growths) and cancers are often fragile and can easily be damaged by the passage of stool. FIT tests for the presence of this hidden blood, as an early sign of precancerous or cancerous cells. Since FIT only detects human blood from the lower intestines, presence of medicines and food does not interfere with the test. So, it tends to be more accurate and have fewer false positive results than other tests. FIT is less invasive and can be done at home. We use a high-quality FIT kit, developed in Japan, that requires a very small amount of stool. Our highly sensitive FIT machine can analyse the sample and produce accurate results in just 5 minutes.