Get a brief overview of cancer, a group of more than 100 diseases in which cells in a part of the body begin to grow out of control.
Start in this section to get answers to some of the basic questions about cancer, such as what it is, what some of the common signs and symptoms are, and how many people it affects.
Cancer is a group of diseases that can cause different signs or symptoms, depending on where it is in the body. Here you can learn about some of the most common signs and symptoms of cancer.
Our bodies have a network of lymph (limf) vessels and lymph nodes. This network collects fluid, debris, and other things that are in the body’s tissue, outside the bloodstream. Cancer can appear in the lymph nodes in two ways: it either starts there or spreads there from somewhere else.
Get answers to some of the most common questions people have about cancer.
Can you "catch" cancer from someone who has it through things like sex, kissing, touching, sharing meals, or breathing the same air? Find out here.
Some cancers are more common than others. Here you can learn more about a person's chances of being diagnosed or dying from certain types of cancer over his or her lifetime.
Cancer prevalence is the number of people living with cancer at any point in time. It includes people diagnosed with cancer in the past as well as people recently diagnosed. Learn about the prevalence of different types of cancer here.
Cancer data can be used to look for trends over time, to find cancer patterns in certain groups of people, and to show whether screening and other prevention measures are making a difference. This information is a key part of cancer prevention and control efforts.
Get a quick overview of the financial costs of cancer for society as a whole.
Here we provide an overview of how people have understood and described cancer throughout history, as well as how the treatment of cancer has evolved.
For many people, the Internet has become the first place to go when looking for information. Here we will offer some basic information about the Internet, along with ideas on what to look for and what to avoid as you look for the facts you need.
Here you can find additional organizations and websites that offer cancer information. These sources should be used for informational purposes only. If you have a health-related problem, please consult a doctor.