Cancer is a disease characterized by the uncontrolled growth and spread of abnormal body cells. The human body is made up of billions of cells. Normally, cells reproduce themselves by dividing so that growth occurs. Worn-out tissue is replaced and injuries are repaired in this manner.
Occasionally, cells grow abnormally, into a mass called a tumor. Some tumors are benign (noncancerous); others are malignant, or cancerous. The growth of a benign tumor may interfere with body function, but these tumors are seldom life-threatening. Malignant tumors,on the other hand, invade and destroy normal tissue. By a process called metastasis, cells break away from a cancerous tumor and spread through the blood and lymphatic system to other parts of the body where they form new tumors. Sometimes cancer grows and spreads rapidly. In other cases, it develops and spreads slowly. CAC Diagnostics testing provide a pivitol role in cancer diagnosis and treatment of the: