The correct name for colon PT4n0m0 is colon cancer T4N0M0, colon cancer T4N0M0 is stage II. The staging of colon cancer adopts the international TNM method, T refers to primary lesion, N refers to regional lymph nodes, M refers to distant metastasis.T4 refers to colon cancer entering into the abdominal cavity or invading the neighboring organs, N0 is no regional lymph node metastasis, and M0 refers to no distant metastasis, so colon cancer T4N0M0 is the second stage, and at this time, colon cancer begins to invade the muscular layer of the intestinal wall. For patients suffering from colon cancer, they should go to the hospital, and the survival rate of locally progressive stage II colon cancer patients will increase after surgical treatment and chemotherapy. On a daily basis, the condition needs to be tested regularly, and if there is any abnormality, medical examination is needed.