Catherine, Princess of Wales , pictured, announced that she is undergoing preventive chemotherapy to treat cancer discovered after she had abdominal surgery.
While the exact situation is difficult to determine because the 42-year-old princess did not disclose the nature of the cancer, here is an explanation of preventive chemo.
Chemotherapy is the use of powerful drugs to stop cancerous cells from growing, dividing and creating more cells. There are many kinds of chemotherapy, depending on the cancer, how far it has spread and the treatment regime.
Because these treatments cannot distinguish between different cells, they end up killing some cells that do good, such as white blood cells, causing some side effects.
Preventive chemotherapy is often used after surgery to “decrease the likelihood” that cancer will return, Kimmie Ng, an…