What is the sixth stage of cancer?

The number of chemotherapy and cancer staging has no inevitable relationship, not as a basis for cancer staging. Generally, cancer that needs chemotherapy is not classified as early stage. Cancer staging is mainly based on the size of tumor tissue, the depth of tumor invasion, and the number and location of lymph node metastasis. Whether there is distant organ metastasis depends on imaging examination, including lung, liver, brain bone metastasis, need ct or magnetic resonance imaging, as well as bone scan to determine. Cancer after surgery and chemotherapy, there is a possibility of recurrence, which is higher in malignant degree, and the recurrence rate is relatively high in late stage.