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Skin Cancer, Melanoma - What Happens
SYMPTOMS & TREATMENTS
- Topic Overview
-
Health Tools
- Cause
- Symptoms
- What Happens
- What Increases Your Risk
- When To Call a Doctor
- Exams and Tests
- Treatment Overview
- Prevention
- Home Treatment
- Medications
- Surgery
- Other Treatment
- Other Places To Get Help
- Related Information
- References
- Credits
Melanoma develops when normal pigment-producing skin cells called melanocytes become abnormal, grow uncontrollably, and invade surrounding tissues. Usually only one melanoma develops at a time. Although melanomas can begin in an existing mole or other skin growth, most start in unmarked skin. Melanoma is classified as primary or metastatic.
Primary melanoma
Primary melanoma
usually follows a predictable
pattern of growth
through the
skin layers. Early detection and surgery to remove the melanoma cure most
cases of primary melanoma.
If not treated, most melanomas spread to other parts of the body over time. Melanomas rarely go away without treatment.
Your long-term survival, or prognosis, with primary melanoma depends on:
- How deeply the melanoma penetrates the skin (melanoma thickness).
- Whether an open sore is present over the primary tumor (ulceration).
Metastatic melanoma
Metastatic melanoma has spread through the lymph system to nearby skin, lymph nodes, or through the bloodstream to other organs such as the brain or the liver. Metastatic melanoma usually cannot be cured. Clinical trials may offer the best treatment option for people with metastatic cancer.
Experts talk about prognosis in terms of "5-year survival rates." The 5-year survival rate means the percentage of people who are still alive 5 years or longer after their cancer was discovered. Remember that these are only averages. Everyone's case is different, and these numbers do not necessarily show what will happen to you. The estimated 5-year survival rate for melanoma is:2
- 98% if cancer is found early and treated before it has spread.
- 62% if the cancer has spread to close-by tissue.
- 15% if the cancer has spread farther away, such as to the liver, brain, or bones.
| By: | Healthwise Staff | Last Revised: February 8, 2011 |
| Medical Review: | Kathleen Romito, MD - Family Medicine Alexander H. Murray, MD, FRCPC - Dermatology | |
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.
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