What is Melanoma

Melanoma is a serious form of skin cancer that develops when pigment-producing cells, known as melanocytes, undergo uncontrolled growth and become malignant. While it can spread to other parts of the body if left untreated, early detection of melanoma significantly improves clinical outcomes and survival rates.

What exactly is melanoma?

Melanoma originates in melanocytes, the cells responsible for producing melanin, the pigment that gives skin its color. Unlike basal or squamous cell carcinomas, melanoma is more likely to invade nearby tissues and spread to other organs (metastasis) via the lymphatic system or bloodstream. It most commonly appears on the skin, but it can rarely occur in the eyes (ocular melanoma) or mucous membranes.

What are the primary subtypes of melanoma?

Clinical classification of melanoma is essential for determining the appropriate treatment path. The most common subtypes include:

• Superficial spreading: The most frequent type, usually growing along the top layer of skin before penetrating deeper.


• Nodular: Often appears as a solid bump that grows more rapidly than other forms.


• Lentigo maligna: Typically found on sun-damaged skin in older adults, often appearing as a slow-growing flat patch.


• Acral lentiginous: A rarer form that develops on the palms, soles of the feet, or under the nails.

Who is most at risk for developing melanoma?

While melanoma can affect anyone, incidence is highest in fair-skinned individuals living in regions with high ultraviolet (UV) radiation exposure. According to the American Cancer Society, the average age at diagnosis is 65, though it is one of the most common cancers diagnosed in young adults. Risk factors include a history of severe sunburns, the presence of many atypical moles, and a genetic predisposition, such as mutations in the CDKN2A gene.

Next steps

• Perform monthly skin self-exams to check for changes in the size, shape, or color of existing moles.


• Schedule an annual full-body skin check with a board-certified dermatologist.


• Join our community of 30 members at DiseaseMaps.org to share experiences and find support.


• Consult an oncologist if a biopsy confirms a melanoma diagnosis to discuss staging and treatment options like immunotherapy or targeted therapy.

Medical disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

References

• NIH National Cancer Institute (NCI) - Melanoma Treatment (PDQ®)


• American Cancer Society - Key Statistics for Melanoma Skin Cancer


• Orphanet - Rare Diseases Database


• Melanoma Research Foundation (MRF)