What is metastatic melanoma?

Melanoma is a type of skin cancer that starts in cells called melanocytes. When it spreads beyond nearby lymph nodes to other parts of the body, it’s called metastatic melanoma, or stage IV melanoma. The most common places it spreads include the lungs, liver, bones, and brain.

While stage IV melanoma is a serious condition, newer therapies, like immunotherapy and targeted treatments, are helping more people live longer and, in some cases, achieve long-term remission.

At the Tara Miller Melanoma Center, part of Penn Medicine’s Abramson Cancer Center, specialists work together to develop a treatment plan based on the unique features of your cancer. Our melanoma and skin cancer care team uses advanced testing and offers clinical trials to help match you with the most effective options for your specific type of melanoma.

Signs of metastatic melanoma

Metastatic melanoma can cause different symptoms depending on where the cancer has spread. Some people may not notice symptoms at first, especially if the disease is found before a primary tumor is identified.

Symptoms may include:

  • Swollen or painful lymph nodes
  • Feeling tired
  • Unexplained weight loss or lack of appetite
  • Trouble breathing or a cough that doesn’t go away
  • Bone pain
  • Headaches or seizures

How melanoma develops and spreads

Metastatic melanoma begins as melanoma of the skin. Like most skin cancers, it’s usually caused by ultraviolet (UV) radiation. This damage often comes from the sun or tanning beds and triggers gene mutations in your skin cells. Over time, these cancer cells can travel through the blood or lymph system to other parts of the body.

How we diagnose melanoma that has spread

To diagnose metastatic melanoma, your care team starts with a thorough skin and physical exam. If a suspicious area is found, a skin biopsy is used to confirm melanoma. Imaging and lab tests help determine whether it has spread and where it’s located in the body. In some cases, genetic testing of the tumor is recommended to look for specific changes that can guide treatment.

CT scan
A CT scan helps diagnose traumatic injuries, cancer, vascular diseases, and many other conditions.
MRI
An MRI provides high-resolution images of the brain, spine, and many other structures in the body.
PET scan
A PET scan helps us diagnose diseases and plan treatment as early as possible.
Ultrasound
Leading-edge ultrasound technology helps us diagnose a range of health conditions.

Metastatic melanoma treatment

Our recommended treatment for people with metastatic melanoma depends on multiple factors, including your age and overall health, the locations and number of metastases, how fast the disease is spreading, and your goals for treatment. In some cases, melanoma surgery may be used to remove tumors.

Chemotherapy
This treatment uses strong medicines to target and eliminate cancer cells and to prevent their spread.
Immunotherapy
This treatment boosts the immune system, enhancing its ability to recognize and eliminate abnormal cells.
Radiation therapy
External radiation and internal radiation therapies are used to treat cancer and benign tumors.
Targeted therapy
This cancer treatment uses powerful medications to help identify and disable certain types of cancer cells.
Tumor resection
This surgical procedure is commonly used to remove cancerous tumors in various parts of the body.
Tumor-infiltrating lymphocyte (TIL) therapy
This treatment uses your own immune cells, grown in a lab, to help your body fight cancer.

Advancing melanoma care through research

Metastatic melanoma can be challenging to treat, and no two cases are exactly alike. At Penn Medicine’s Tara Miller Melanoma Center, your care is guided by a team that uses the latest research to inform treatment decisions.

Our researchers have helped advance immunotherapy and other targeted treatments that use the body’s own immune system to fight cancer. As a leader in cell and gene therapy, Penn Medicine offers newer treatments like tumor-infiltrating lymphocyte (TIL) therapy and continues to explore additional options for melanoma. These efforts, along with access to clinical trials, give you more treatment options and help bring promising therapies into care as quickly and safely as possible.

National Cancer Institute Designated Comprehensive Cancer Center badge on top of shot of hospital

Rated “exceptional” by The National Cancer Institute

Penn Medicine’s Abramson Cancer Center is a world leader in cancer research, patient care, and education. Our status as a national leader in cancer care is reflected in our continuous designation as a Comprehensive Cancer Center by the National Cancer Institute (NCI) since 1973, one of 7 such centers in the United States. The ACC is also a member of the National Comprehensive Cancer Network, one of a select few cancer centers in the U.S., that are working to promote equitable access to high-quality, advanced cancer care.

Related specialties

Melanoma and skin cancer care
We provide the newest melanoma and skin cancer therapies, clinical research, and patient education.

Patient stories

Proton therapy for skin cancer: Chuck's story

Proton therapy for skin cancer: Chuck's story

Penn Medicine cured my cancer, and I’m living a wonderful, healthy life, appreciating every day I have with my family.

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