Melanoma march: what the term may describe

A melanoma march can refer to small nodules developing in the skin or tissue between the original melanoma and its regional lymph-node basin. Clinicians may call these in-transit deposits. They can be skin-coloured, brown, blue-black or red, and may feel firm; some cause no discomfort. Similar-looking bumps can arise from scars, cysts, blocked follicles or infection, so the appearance does not establish the cause. Examination maps the lesions, checks nearby nodes and considers the original tumour history.

Arrange a review with the melanoma team for new clustered bumps, a firm cord-like area or changes along the path from a previous lesion toward a lymph-node region. Photographing the area and noting changes can help. The team may use ultrasound, imaging or a biopsy to confirm what is present. Depending on the number, location and stage, options can include surgical excision, skin cancer surgery, tumour removal surgery or immunotherapy. The plan is individual and may combine local and whole-body treatment.

Seek prompt advice for rapidly appearing or enlarging nodules, bleeding, ulceration, marked redness, fever or painful swelling. Emergency care is needed for breathing difficulty, severe weakness, confusion, seizure or a sudden severe headache. These symptoms can signal an urgent complication and should not be attributed to a skin change without assessment.

Ask whether the lesions follow a lymphatic drainage route, which test will confirm their nature, whether lymph nodes or other areas need imaging, and how the result changes the treatment plan. Ask how to check the skin between visits and what follow-up after cancer treatment will include.