In photodynamic therapy (PDT), you receive a light-activated medicine that tends to collect in cancer cells. Later the cells are exposed to a special light. This changes the medicine into a new form that kills the cancer cells.
Surgery can sometimes be used to treat esophageal cancer. The type you have depends on where the cancer is, how much it's spread, your overall health, and other factors.
You may need surgery for hemorrhoids if they cause severe symptoms. Or you may have it if your hemorrhoids come back after you have tried other treatments. Read on to learn what to expect.