There are significant differences in survival times between intermediate and late stage colon cancer, and the degree of malignancy of the tumor, as well as the treatment measures used, can also affect the survival time of colon cancer, which can range from weeks to years.
In the case of mid-stage colon cancer, after a combination of surgery, chemotherapy, radiation therapy, and targeted therapy, survival can be more than two years, and occasionally more than five years.
Mid-stage colon cancer that is more malignant, or less malignant, has reached an advanced stage but can still be treated with surgery or chemotherapy, and with aggressive treatment, survival is mostly 1-2 years, and occasionally more than two years.
Those with more advanced colon cancer that is inoperable but can be treated with targeted therapy, chemotherapy, or interventional therapy usually have a survival time of 6 months to a year.
Patients with advanced disease, who are in poor health and cannot undergo chemotherapy or radiotherapy, have a survival time of less than six months, and even less if there are complications such as gastrointestinal bleeding or acute peritonitis, which can be life-threatening within weeks or even days.