Abdominal melanoma: signs and next steps

Melanoma on the abdomen may present as a new pigmented spot or as an existing mole that changes in size, shape, colour or sensation. Some melanomas contain little pigment, so a pink or reddish changing growth also needs attention.

A clinician looks for asymmetry, an irregular border, varied colour and ongoing evolution, while comparing the lesion with the person's other marks. These clues guide assessment but do not confirm melanoma. Examination with a dermatoscope can reveal structures beneath the surface, and diagnosis depends on laboratory examination of removed tissue.

If melanoma is confirmed, features of the tissue help guide whether further surgery, lymph-node assessment, imaging or systemic treatment should be discussed. The plan is individual; a visible abdominal location does not by itself determine how advanced the disease is.

Arrange a prompt skin examination for a new or evolving spot, especially one that looks unlike your other marks. Note when the change began and bring clear earlier photographs if available. Do not cut, burn, freeze or treat it with an acid or mole-removal product, because injury can complicate examination and delay diagnosis.

When melanoma is found, surgery commonly removes the lesion with a margin of surrounding skin. Additional care may include a sentinel lymph node procedure, further tumour surgery, immunotherapy or structured surveillance, depending on the findings and overall health.

Seek timely medical assessment if an abdominal mole or spot is enlarging, changing shape or colour, repeatedly bleeding, crusting, itching or failing to heal. A rapidly changing lesion should be assessed urgently. These signs do not establish the diagnosis, but they are reasons for direct examination rather than watchful waiting at home.

Ask how the tissue will be removed and examined, whether the entire lesion is being sampled, and when results will be explained. If melanoma is confirmed, clarify what the pathology features mean, whether lymph-node testing or scans are relevant, who coordinates treatment, and what skin and lymph-node follow-up is planned.