human
I'm a bit confused about the different types of cancers and how they're diagnosed.
assistant
There are many different types of cancer, each with its own unique characteristics. For example, some cancers spread quickly while others don't spread at all. Some cancers are caused by genetic mutations in our DNA while others are caused by environmental factors such as smoking or exposure to certain chemicals. Each type of cancer is diagnosed differently depending on its specific symptoms and characteristics. A doctor will typically use a combination of tests, including physical exams, blood work, imaging scans, and biopsies, to diagnose the type and stage of cancer.