Looking at sigmoid colon cancer as a whole, sigmoid colon cancer stage 2a is not considered a serious condition. In stage 2a of sigmoid colon cancer, although the cancer cells have broken through the colon muscle, but no metastasis has occurred, which belongs to the progressive stage of sigmoid colon cancer, so it is not considered serious. Generally speaking, there are no obvious discomfort symptoms in this period, and a small number of patients may have problems such as slight pain in the abdomen and low appetite. If sigmoid colon cancer patients are diagnosed in stage 2a, they need to undergo local or overall resection through surgery as early as possible. At the same time with the use of chemotherapy to slow down the development of the disease and improve the survival rate, commonly used programs include capecitabine combined with oxaliplatin and so on. Usually, if patients with stage 2a sigmoid colon cancer can achieve good prognosis through treatment, so don’t have too much psychological pressure. In life, one should control the intake of fat, protein, and do not eat spicy and stimulating food, so as not to affect the treatment.