There are more than one hundred different diseases that will qualify as cancer due to their biological properties. Such properties include cell death (impaired apoptosis), uncontrolled cell growth, and the ability to metastasise to faraway locations and attack other tissues. Cancer education covers learning topics such as melanoma, colorectal cancer, neck and head cancer, lung cancer, acute lymphoblastic leukaemia, ovarian cancer, breast cancer, prostate cancer, lymphoma, osteosarcoma, and oesophageal cancer.