Colon cancer and rectal cancer are often grouped together because they have many features in common.(1)
Colorectal cancer screening:
- stool base test -Stool OB: tests – a fecal occult blood test (FOBT) or fecal immunochemical test (FIT) ,Guaiac-based fecal occult blood test (gFOBT)
- Visual structure exam: colonoscopy
- X Ray: special imaging (x-ray) tests.
- Stool DNA test : (2),(3),(4)
blood test (Lab) Blood tests for this tumor marker can sometimes suggest someone might have colorectal cancer, but they can't be used alone to screen for or diagnose cancer.
Tumor markers: Colorectal cancer cells sometimes make substances called tumor markers that can be found in the blood.
Liver enzymes: You may also have a blood test to check your liver function, because colorectal cancer can spread to the liver.
Digital rectal exam (DRE)
The most common tumor marker for colorectal cancer is carcinoembryonic antigen (CEA).
What is adenocarcinoma of the colon (or rectum)?
Adenocarcinoma is a type of cancer that starts in the cells that form glands making mucus to lubricate the inside of the colon and rectum. This is the most common type of colon and rectum cancer.Feb 27, 2017
copy from link : https://www.cancer.org/cancer/colon-rectal-cancer/about/what-is-colorectal-cancer.html
- The first section is called the ascending colon. It starts with a pouch called the cecum, where undigested food is comes in from the small intestine. It continues upward on the right side of the abdomen (belly).
- The second section is called the transverse colon. It goes across the body from the right to the left side.
- The third section is called the descending colon because it descends (travels down) on the left side.
- The fourth section is called the sigmoid colon because of its “S” shape. The sigmoid colon joins the rectum, which then connects to the anus.
The ascending and transverse sections together are called the proximal colon. The descending and sigmoid colon are called the distal colon.
Sign and symptom
- Lower gastrointestinal bleeding (LGIB)
Copy from Link https://coloncancercoalition.org/get-educated/what-is-colon-cancer/
