Colon Cancer Stages Tnm

However in some tumor types stage groups do not conform to this simplified schema.

Colon cancer stages tnm. Carcinoma in situ is categorized stage 0. Stage 1 the cancer has. You are likely to see your cancer described by this staging system in your pathology report unless you have a cancer for which a different staging system is used. And within a stage an earlier letter means a lower stage.

As a rule the lower the number the less the cancer has spread. Doctors use it to describe the size of the tumour t whether the cancer has spread to lymph nodes n or to other parts of the body m. Stage 1 colon cancer indicates the cancer has grown into the inner layer of the colon called the mucosa to the next layer of the colon called the submucosa. There is no evidence the cancer has spread to lymph nodes or distant organs.

Colorectal carcinoma staging can be performed using two systems. The tnm system is the most widely used cancer staging system. Cells found in stage 0 colorectal cancer may be cancerous or precancerous. The cancer is in its earliest stage and hasn t spread beyond the mucosa which is the inner lining of the colon or rectum.

A higher number such as stage iv means cancer has spread more. Stage i stage 1 colorectal cancer. Tumour node and metastasis tnm staging is one of the systems used to stage bowel colon and rectal cancer. It has not spread to the lymph nodes.

The earliest stage colorectal cancers are called stage 0 a very early cancer and then range from stages i 1 through iv 4. The cancer has grown into the intestinal wall through the mucosa the inner lining and into the submucosa and may have entered the muscle. The tnm staging system. Most hospitals and medical centers use the tnm system as their main method for cancer reporting.

The traditional dukes staging system has largely been replaced by the tnm system but is nonetheless often used clinically. Staging colon cancer and rectal cancer each cancer has its own staging criteria.