What is cancer?
Cancer happens when cells that are not normal grow and spread very fast in a certain part of the body. Normal cells grow, divide and then die. Cancer cells do not stop growing and dividing. Instead of dying, cancer cells can come together to form a tumor, such as:
- Brain tumors
- Wilms’ and other kidney tumors
- Bone and soft tissue sarcomas
- Other rare tumors
Not all tumors are cancerous and not all cancers form tumors. Some cancers involve the blood and the organs that make blood in the body. These include: