But if your tumor keeps growing, even with treatment, there is a lower chance will not help you feel better or increase your chance of living longer. Some people can live with cancer for a long time, even many years. reduction in the size of the tumor must last for at least one month. As a cancerous tumor grows, the cells can spread to other areas of the body. How long can someone live with stage 4 cancer? Some stage 4 patients continue to defy the odds, living years after their During the final stages of pleural mesothelioma, the cancer has spread to. It is possible to live for many months or years with certain types of cancer, even after the development of metastatic disease. How well any treatment works. Chronic cancer is cancer that cannot be cured but that ongoing treatment, In the past, many people did not live long with metastatic cancer. Generally, cancer rates are highest in countries whose populations have the highest life expectancy, education level, and standard of living. Read about cancer, a condition where cells in a specific part of the body begin to reproduce uncontrollably. The cancerous cells can invade and destroy. When it's not possible to remove all of a cancerous tumor — for example, because doing so may severely harm an organ — your doctor may remove as much as. His owner reported tenesmus from the large anal sac tumor and the markedly As an oncologist, I recommend treatment when the pet is likely to live longer.