Information for the public
Stages of melanoma
Melanoma is divided into 5 main stages, which are numbered 0, 1, 2, 3 and 4. Doctors often write the stage number in Roman numerals – 0, I, II, III and IV.
Stages 1, 2 and 3 are then divided into smaller stages that are described using letters of the alphabet, for example stage 2A (or stage IIA). The stages are based on a number of factors including how big the melanoma is and whether or not it has spread.
The treatment you should be offered depends on the stage of melanoma you have.