Question:
How many different cancers are there? What are they called?
Answer:
Cancer is a group of more than 100 different diseases that have some important things in common. Cancer cells are abnormal and divide without control or order. These cells can invade and destroy the tissue around them. Cancer cells can also break away from a malignant tumor and enter the bloodstream or lymphatic system. This process, called metastasis, is how cancer spreads from the original tumor to form new tumors in other parts of the body. Names of more common cancers include carcinoma, sarcoma, lymphoma and leukemia.