I have a patient who came to see me with a very dark small mole on her neck. She had it for about 3 weeks, and was worried because she had a family history of Melanoma. Her dad had died from advanced melanoma a few years prior. She was in her early 30's and worked as a nurse. She wanted me to take a look because her doctor wasn't concerned and said it was nothing.
For some reason, those words, combined with her family history and how this tiny dark spot had irregular borders gave me chills. I always feel that it's better to be safe than sorry, so I did a punch biopsy on the spot and sent it off to the lab.
As you've probably guessed, the pathologist called me with the news that the tiny, dark, spot with irregular borders was in fact, melanoma. I arranged for her to see a dermatologist, and she had the entire area removed. Luckily for her, it was early enough that she didn't require chemo and is completely cancer free.
Prognosis
If melanoma is caught early, survival rates are in the high 90% range. Unfortunately, if it's an aggressive type of tumor, and not caught early, then it can be fatal. Approximately 75% of skin cancer deaths are from melanoma. Stage 2 for example has a 40% survival rate over 10 years.
Each year, there are about 48,000 deaths worldwide attributed to melanoma. It is more common in males and in caucasians and those who live in sunny areas.
What is it?
Melanoma results from the abnormal and unregulated growth of melanocytes, which are pigment producing cells. The treatment is surgical removal if the thickness is 1mm or less. And that's tiny.
Staging of Melanoma
T = Tumor size. Smaller = better survival
N = lymph Nodes No lymph node involvement = better survival
M = Metastasis, whether it has spread. No metastasis = better survival.
Stage 0: Melanoma in Situ - 100% Survival
Stage I/II: Invasive Melanoma, 85-95% Survival
T1a: Less than 1.00 mm primary, w/o Ulceration
T1b: Less than 1.00 mm primary, w/Ulceration
T2a: 1.00-2.00 mm primary, w/o Ulceration
Stage II: High Risk Melanoma, 40-85% Survival
T2b: 1.00-2.00 mm primary, w/ Ulceration
T3a: 2.00-4.00 mm primary, w/o Ulceration
T3b: 2.00-4.00 mm primary, w/ Ulceration
T4a: 4.00 mm or greater primary w/o Ulceration
T4b: 4.00 mm or greater primary w/ Ulceration
Stage III: Regional Metastasis, 25-60% Survival
N1: Single Positive Lymph Node
N2: 2-3 Positive Lymph Nodes OR Regional Skin/In-Transit Metastasis
N3: 4 Positive Lymph Nodes OR Lymph Node and Regional Skin/In Transit Metastases
Stage IV: Distant Metastasis, 9-15% Survival
M1a: Distant Skin Metastasis, Normal LDH (an enzyme that is elevated with some advanced cancers).
M1b: Lung Metastasis, Normal LDH
M1c: Other Distant Metastasis OR Any Distant Metastasis with Elevated LDH
Based Upon AJCC 5-Year Survival With Proper Treatment
What to look for
• Asymmetrical skin lesion, in other words, it's not the same on both sides.
• Border of the lesion is irregular. The outside looks jagged.
• Color: melanomas usually have many different shades and colors.
• Diameter: moles that measure more than 5 mm are more likely to be melanomas than moles that are smaller.
• Evolution: The evolution (ie change) of a mole or lesion may be a hint that the lesion is becoming malignant
• Elevation: The mole is raised or feels like a bump above the skin.
If you have a suspicious mole get it checked out. If you're worried, keep an eye on your moles and watch for any signs of changes. With melanoma, it usually doesn't look round, instead the outside borders are usually irregularly shaped and kind of jagged.
I've had patients who've lost parents to Melanoma because they were treated too late. Others have had recurrence of their melanoma and required chemotherapy, and I've worked with women who spouses died from melanoma.
Mole Mapping
In any case, melanoma is a serious type of skin cancer. If you have a lot of moles (more than 50) or have a family history, see a dermatologist for mole mapping. For this, full body photos are taken every 6 months to compare the individual moles to evaluate any changes that would require a biopsy.
This is particularly effective for people who are heavily freckled or who have too many moles to remove all of them.
I'll cover Basal and Squamous Cell skin cancer in the coming weeks.