Cancer is a disease where tiny parts of our body, called cells, start growing in a way that is not meant to happen. These cells can grow and grow and grow until they form a lump, called a tumor. Sometimes these tumors are not dangerous, but sometimes they can make us very sick.
Doctors and scientists have been working hard to understand how cancer works and how to stop it from making us sick. They use special tools like microscopes to see these tiny cells and figure out what is making them grow in a bad way.
In the movie or film called "Cancer," they may show people who have this disease and what they are going through when they are feeling sick. They may also show how doctors and scientists are working hard to understand cancer and find ways to help people who have it. It's important to learn about cancer so we can all work together to try and find a cure.