Frequently Asked Questions 1. What is cancer? The body is made
up of many types of cells. Normally, cells grow, divide, and
produce more cells as needed to keep the body healthy.
Sometimes, the process goes wrong. Cells become abnormal and
form more cells in an uncontrolled way. These extra cells form a
mass of tissue, called a growth or tumor. Tumors can be benign,
which means not cancerous, or malignant, which means cancerous.