What to know about AJCC 8 melanoma

The eighth edition refined how features such as tumour thickness, ulceration, involved lymph nodes and spread to other organs are grouped. A stage summarises findings available at a particular point; it does not describe every detail of an individual's health or predict exactly what will happen.

The T category describes the primary melanoma, especially its measured thickness and whether its surface is ulcerated. The N category records regional lymph-node involvement and certain nearby deposits. The M category describes distant spread, including the organ involved and selected blood-test information. These categories are combined into an overall stage group.

A clinical stage uses examination, imaging and biopsy information available before definitive surgery. A pathological stage may add findings from the removed melanoma and sampled nodes. That distinction explains why wording on an early clinic note can differ from a later pathology-based stage.

Ask for the pathology report and a plain-language explanation of the T, N and M categories. Confirm whether the stage is clinical or pathological, whether margins are clear, and whether any additional node assessment or imaging is being considered. Treatment planning may involve surgery, medicines that act throughout the body, or structured surveillance, depending on the complete findings.

Keep a record of the original biopsy, surgery report, imaging and final pathology. These documents help another specialist interpret the same stage correctly and make follow-up easier if care moves between clinics.

Contact your melanoma team promptly for a new or enlarging lump near the scar or in a lymph-node area, a new changing skin lesion, persistent unexplained headache, weakness, breathlessness, or bone pain. These symptoms have many possible causes, but they merit assessment because they can change the tests or care you need. Seek emergency help for sudden severe neurological symptoms or major breathing difficulty.

Which finding had the greatest effect on my stage? Is this the final pathological stage? Do I need sentinel lymph-node assessment, imaging or further surgery? What follow-up schedule fits my findings, and which changes should I report between appointments?