Explain the side effects of cancer treatments

Often times, treatment has improved; I notice these treatments, chemotherapy, removal of cancerous tissues, etc., may enforce a few months of longevity. a person with a cancerous colon has to withstand a colonosctomy, which in turn patient needs a colostomy bag 4 collection of feces. more often than not, the cancer spreads to other organs. lungs, throat, esophagus, etc.