Sigmoid colon adenocarcinoma is the most common type of colon tumor, often evolving from adenomatous polyps, and the exact length of time one can live is a difficult question to answer. Each patient’s physical condition, state of mind, tumor heterogeneity, degree of differentiation, and metastasis will all have an impact on survival. In general, early-stage tumors, young patients, good health, good mentality, and well differentiated tumors generally have a better prognosis and a higher five-year survival rate after aggressive treatment.
Middle- and late-stage adenocarcinoma of the colon, often with metastasis and local tissue infiltration, is difficult to remove radically with surgery, and the prognosis is even worse if the patient is in poor health, older, and has many combined chronic diseases. Poorly differentiated and highly malignant tumors are often difficult to be treated with chemotherapy, and distant metastases are present early, making it difficult to achieve radical resection with surgery alone. So in general the earlier the tumor the longer the survival time, the more advanced the survival time the shorter.