Out of the three types of skin cancer, melanoma is the most dangerous and if not caught early could be fatal. Australia has one of the highest rates of melanoma cases in the world. Here is some important statistics (ref: Melanoma Institute Australia, Cancer Council, SunSmart).
Nodular melanoma is an especially dangerous form of melanoma. It appears as a new small round lump. It may be pink, red, black or brown in colour. It grows very quickly and can become life threatening in six to eight weeks.