We just learned about the Benign Tumor.
Another part of a disease is a Malignant Tumor.
Remember that a tumor or neoplasm is really just a bunch of extra cells that the body made that aren't supposed to be there.
Malignant means bad, so it is a bad tumor that is causing problems in the body.
A malignant tumor is also called cancer.
The human body makes new cells all the time, but the cells are supposed to live for a while, do their job and then go away.
Malignant tumors have many new cells that are not made right, and they also don't go away and continue to grow.
They can get in the way of other parts of the body like blood vessels, and they can spread to other parts of the body.
The name Cancer actually comes from the Greek word for crab "καρκίνος" (karkinos), because early Greek doctors thought a swollen tumor looked almost like the color of a crab.
(from: wikipedia - cancer)
Kid Facts - Blast from the past: Eyelids
