What should you know about very small melanoma?

Melanoma is a skin cancer arising from pigment-producing cells. A small lesion may still show asymmetry, uneven colour, an irregular edge, or a change from a person's other marks. The pathology report helps describe depth and other features that guide staging. A confirmed [Melanoma](/conditions/melanoma/) is therefore managed according to its findings, not reassured by appearance alone.

A very small melanoma does not automatically mean spread, and a changing mole is not proof of melanoma. The safest direction is expert assessment of the lesion and any relevant pathology rather than guessing from photographs or diameter.

Arrange a prompt appointment with a dermatologist or skin-cancer service. Do not pick, burn, or attempt home removal. The clinician may inspect the lesion with dermoscopy and recommend [Surgical Excision](/treatments/surgical-dermatology/excisional-surgery/) or another form of [Skin Cancer Surgery](/treatments/surgical-dermatology/skin-cancer-surgery/) to obtain or remove the tissue.

After pathology, the team explains whether wider removal, a [Sentinel Lymph Node Biopsy](/treatments/diagnostics-and-staging/sentinel-lymph-node-biopsy/), surveillance, or additional treatment is appropriate. These choices depend on the report and examination, not on the word ‘small’ alone.

Seek assessment promptly for a new or changing pigmented spot, bleeding, crusting, persistent itch, or a lesion that looks different from the rest. Contact the treating team quickly after diagnosis if the wound becomes increasingly painful, red, swollen, or drains, or if you develop fever. New neurological symptoms in someone with known advanced cancer require urgent medical attention, but a small skin lesion by itself does not establish brain spread.

Ask what the pathology shows about depth and margins, whether further excision is needed, how the diagnosis is staged, and how often the skin and lymph nodes should be checked. If additional treatment is discussed, ask why it is recommended and what alternatives or side effects apply.