Cancer results when cells grow out of control and form a tumor.
The cancer is very serious if the tumor begins to spread (metastasize)
throughout the body.
There are many different types of cancer.They are named based on where the tumor is located, or where it first started growing in the body. The most common forms of cancer are colon, lung, breast and prostate cancer.
There are many different types of cancer.They are named based on where the tumor is located, or where it first started growing in the body. The most common forms of cancer are colon, lung, breast and prostate cancer.
Normally, the body makes new cells only when they are needed for
growth or repair. This cell growth is controlled by a group of genes that work
together. When one or more of these genes is damaged (mutated), too many cells
are produced. The excess cells clump together to form a tumor, resulting in
cancer.
Genes can be mutated by bad chemicals in a person's environment, like tobacco smoke. But more often, damage to growth control genes occurs spontaneously in only a few cells of the body. That's why a tumor is typically found (or at least begins) in just one spot.
Genes can be mutated by bad chemicals in a person's environment, like tobacco smoke. But more often, damage to growth control genes occurs spontaneously in only a few cells of the body. That's why a tumor is typically found (or at least begins) in just one spot.
