Staging Colon Cancer Prognosis

A higher number such as stage iv means cancer has spread more.

Staging colon cancer prognosis. But there is no cancer in the lymph nodes small structures that are found throughout the body that make and. Colorectal cancer might not cause symptoms right away but if it does it may cause one or more of these symptoms. Whether it is present only in the inside lining of the colon or rectum has grown deeper into those tissues or has spread to. Colon cancer is typically staged based on a system established by the american joint committee on cancer called the tnm.

As a rule the lower the number the less the cancer has spread. The earliest stage colorectal cancers are called stage 0 a very early cancer and then range from stages i 1 through iv 4. The staging of colorectal cancer describes the extent of the disease. The outcome or prognosis of colon cancer depends on the stage or advancement of the cancer.

For example if the 5 year relative survival rate for a specific stage of colon or rectal cancer is 80 it means that people who have that cancer are on average about 80 as likely as people who don t have that cancer to live for at least 5 years after being diagnosed. A change in bowel habits such as diarrhea constipation or narrowing of the stool that lasts for more than a few days. Stage 4 colon cancer is the most advanced stage and has the worst prognosis. Staging colon cancer is essential to determine the best treatment approach.

The stage of colon cancer refers to how far it s spread. And within a stage an earlier letter means a lower stage. Cancer grade refers to how close the cancer cells look to normal cells. A relative survival rate compares people with the same type and stage of cancer to people in the overall population.

The more abnormal the cells look. Factors that affect colon cancer prognosis. Staging tests may include imaging procedures such as abdominal pelvic and chest ct scans. The astler coller classification 1954 or the dukes classification 1932 are now less used.

Stage 4 colon cancer is divided into four stages based on the size location and characteristics of the tumors. Doctors also use a cancer s stage when talking about survival statistics. Stage ii colorectal cancers are larger and go through the muscular wall of the colon. As reported by the american cancer society localized cancer that hasn t.