The answer depends on the situation. Cancer is uncontrolled cell division and growth. While cell division is a normal biological process, when cancer is involved, the cell divisions become abnormal. Instead of producing nicely organized cells that are all the same size and have the same function, cancer makes them different. Some cells are huge and some are small.
Some cancer cells produce hormones while others continue to divide and produce more abnormal cells.
This uncontrolled cell growth makes a tumor and allows the cancer to spread. Another name for cancer is neoplasia or neoplasm. Sarcomas are cancers derived from structural tissues, such as bone, muscle, or connective tissue. An example of a sarcoma is osteosarcoma, a tumor found in bones. Carcinomas are cancers derived from non-structural tissues such as skin cells, blood, and glandular tissue.