Defining the characteristics of the four stages of cancer
DEAR DR. ROACH: Can you define the characteristics of the four stages of cancer? I understand that stage I is generally when cancer is caught early and can be treated with a good success rate, while stage IV is usually the opposite. But I’m not sure what the intermediate stages are. — B.G. ANSWER: Unfortunately, the exact staging for cancers depends on the type of cancer. But in general, you are correct that stage I cancers for solid organs generally consist of small tumors that have not spread, while stage IV usually signifies that cancer has spread to distant organs. Stage I ...