Why are some cancers different from others?
Cancers are alike in several ways, but they also differ in their growth and spread. Some cancers develop faster and spread more quickly, while others take time to manifest. There are also clinical terms used to describe general types of cancer. Sarcoma refers to cancer of the connective tissues (muscles, bones, cartilage, and blood vessels); carcinoma refers to cancer that develops in the skin or the tissue of the internal organs; leukemia refers to cancer of the bone marrow; and lymphoma and myeloma are types of immune system cancers.