![]() ![]() The cancer has not spread to the lymph nodes, but it’s grown through the outer layer of the colon and to the visceral peritoneum. It’s reached the outer layers of the colon, but it has not completely grown through. The cancer has not spread to the lymph nodes or nearby tissue. Stage 2 colon cancer is classified further as stage 2A, 2B, or 2C. In stage 2 colon cancer, the disease is a little more advanced than in stage 1 and has grown beyond the mucosa and the submucosa. It may have also grown into a muscular layer called the muscularis propria. In stage 1 colon cancer, the cancer has grown into the innermost layer (or mucosa) to the next layer of the colon (the submucosa). In stage 0, the cancer has not grown beyond the mucosa, or the innermost layer of the colon. ![]() This is the earliest stage of colon cancer. The stages of colon cancer are as follows: Stage 0 These assignments are based on the structure of the colon and how far the cancer has grown through the layers of the colon wall. Within each of the three categories, the cancer is classified even further and assigned a number and letter to indicate the extent of the disease. Instead of including a number (as in T1 or N1), the cancer category will be TX or NX. In some cases, there’s not enough information to assess the tumor or nodes. M refers to whether cancer has metastasized (spread) from the colon to other parts of the body, like the lungs or liver. N refers to whether cancer cells have spread to nearby lymph nodes. T refers to how large the original tumor is and whether cancer has grown into the wall of the colon or spread to adjacent organs or structures. The system considers the following factors: Staging colon cancer is essential to determining the best treatment approach.Ĭolon cancer is typically staged based on the TNM staging system, which was established by the Union for International Cancer Control and later adopted by the American Joint Committee on Cancer. The stage is used to represent the extent of the cancer and how far it’s spread. If you’ve been diagnosed with colon cancer (also known as colorectal cancer), one of the first things your doctor will want to determine is the stage of your cancer. ![]()
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