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Skin Cancer Detection

 
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Skin Cancer Detection

What are the malignant melanoma warning signs?

Malignant melanoma, which is an atypical mole that is having both abnormal growth and biological behaviour, has to be distinguished from normal moles. There are approximately twenty-five to thirty normal moles per person, so that is asking someone to be able to tell the difference between something that belongs there from something that is slightly different than something that belongs there. We use a pneumonic; A, B, C, D and E to look for some of those moles which are of greater concern. A stands for asymmetrical, which means that the mole is different on one side than it is the other. B means border irregularity, which means that the borders are not sharply demarcated. C is colour irregularity, which means the colour is not one uniform colour throughout. D is a diameter greater than a pencil eraser (six millimetres). E means evolving, or a lesion that's changing. I tell my patients that if it looks like a mole was put on by a draughtsman, it's probably ok.

What are the nonmelanoma warning signs?

There are numeral legions that occur on the skin, most of which are benign. When we ask patients to let us know those legions that they're concerned about, that they're worried about, or those legions to bring into a doctor, we're asking a rather sophisticated question: which is to differentiate between all the little bumps and lumps on your skin, and those that are okay, and those that are not okay. Primarily any legion which crusts or bleeds or is persistent or is getting bigger over time and does not look like any other legion on your skin, those are strong warning signs for a legion which needs to be brought to a doctor's attention. We normally see these things, malignancies, on sun-exposed areas, so since 90% of skin cancers occur on the head and neck that would be a common place to look for them. But in any sun exposed areas, such as the arms, the hands, the lower legs as well.

How can I examine myself for skin cancer?

I think the most important thing to do is to examine yourself for skin cancer on some sort of routine basis. I tell most of my patients the easiest time to do it is at the beginning of every month, right after their shower. Take a look at your front in a mirror and then get a hand mirror to try and look at your back. If you have a partner in the house, having them look at your back is perhaps equally effective. The reason why it's so important to examine yourself for skin cancer and look at yourself once a month is, as I tell my patients, "You're a movie and I'm a snapshot." So, I can only see things when they're brought in to me, but patients can see things as they change.

How can I tell the difference between a normal mole and a malignant one?

We have on our skin an average of 25 to 30 normal moles by the time we are probably 30 to 40 years old. What we're asking in order to determine abnormal moles is to look for those moles which are different than those 30. We do use a system to try to help patients to determine that. We call these the A, B, C, D and E of malignant melanoma. A stands for asymmetrical border. B stands for border irregularities, which is scalloping of the border. C stands for colour irregularity. D stands for diameter greater than 6 millimetres which is about the size of a pencil eraser. Finally E, which may be the most important, is evolving, or a changing lesion. So, with any pigmented lesion which is changing in any capacity; be it size, symptoms (for instance it itches or burns), colour, or elevation, we would like to know. Those are very important signs.

What is a "palpable node" and how can it help detect the spread of cancer?

Most skin cancers—basal cell and squamous cell carcinoma—are localized to the skin, and that's where they do their damage. Unfortunately, malignant melanoma does have the capability, as it grows into the skin, of metastasizing. And the first place it usually metastasizes to is the lymph nodes. The lymph nodes that it goes to are usually the draining lymph nodes, which would be those lymph nodes most geographically in proximity to the atypical mole. When that lymph node has enough tumor in it, it will become palpable—or known as a “palpable lymph node”—that your hand can feel it. That would be—for instance, on the arm, that would be those nodes in the armpit; and on the leg, it would be those nodes in the groin. Finding a palpable node is not something that we would like patients to find because we really want them to find the mole that caused it way before that. Early detection of melanoma is the way to prevent morbidity and mortality from melanoma. Finding a palpable node is not a good sign to have and one that we would prefer to prevent rather than to identify.

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  1. What are the malignant melanoma warning signs?
  2. What are the nonmelanoma warning signs?
  3. How can I examine myself for skin cancer?
  4. How can I tell the difference between a normal mole and a malignant one?
  5. What is a "palpable node" and how can it help detect the spread of cancer?

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Dr. Harry Saperstein, MD, FAAD
Meet the Expert
American Academy of Dermatology
  • What are the malignant melanoma warning signs?
  • What are the nonmelanoma warning signs?
  • How can I examine myself for skin cancer?
  • How can I tell the difference between a normal mole and a malignant one?
  • What is a "palpable node" and how can it help detect the spread of cancer?
more ...
Skin Cancer
 Skin Cancer Basics 
  1. Dr. Harry Saperstein, MD, FAAD
  2. What is "skin cancer"? 
  3. What are the stages of melanoma skin cancer? 
  4. Why is the sun harmful to my skin? 
  5. What are "benign skin tumors" and what types are there? 
  6. What are the main layers of my skin and what functions do they perform? 
  7. What is "melanoma" skin cancer? 
  8. What is "nonmelanoma" skin cancer? 
  9. What is an "actinic keratoses" or "early cancer"? 
  10. Is melanoma skin cancer worse than nonmelanoma? 
  11. What does "in situ" mean when talking about skin cancer? 
  12. What is a "sentinel lymph node" and how is it related to skin cancer? 
 Skin Cancer Prevention 
  1. Dr. Harry Saperstein, MD, FAAD
  2. What are the major risk factors for developing skin cancer? 
  3. How effective is sun block? 
  4. How much sun block should I use and how often should I use it to protect my skin? 
  5. Why is it important to keep a close watch on atypical moles? 
Skin Cancer Detection (Now Playing)
  1. Dr. Harry Saperstein, MD, FAAD
 Skin Cancer Diagnosis 
  1. Dr. Harry Saperstein, MD, FAAD
  2. What types of biopsies are used to diagnose skin cancer? 
  3. What is "microscopic ulceration" and why is it important in diagnosing skin cancer? 
  4. What is "lymphoscintigraphy" and how does it help detect skin cancer? 
 Skin Cancer Treatment 
  1. Dr. Harry Saperstein, MD, FAAD
  2. How are early-stage melanoma skin cancers treated? 
  3. How are later-stage skin cancers treated? 
  4. How often will I need to follow up with my doctor after being treated for skin cancer? 
  5. What are "margins" and how are they related to cancer treatment? 
  6. Is chemotherapy effective in treating skin cancer? 
  7. Can cancer be treated with creams or solutions? 
  8. What types of radiation therapy are used to treat skin cancer? 
  9. What is an "excisional biopsy"? 
  10. What is "curettage" and "electrodessication"? 
  11. How are basal and squamous cell cancers removed? 
  12. What is "skin grafting" and "reconstructive surgery"? 
  13. What is a "topical chemotherapy" and is it effective in treating skin cancer? 
  14. Does laser therapy have a role in treating skin cancer? 
  15. What is "chemical peeling" and how does it help treat skin cancer? 
  16. What is "photodynamic therapy" or "PDT"? 
  17. How should I care for my skin after receiving radiation treatment? 
 Melanoma Basics 
  1. Dr. Harry Saperstein, MD, FAAD
  2. What is a "lentigo maligna melanoma"? 
  3. What is an "acral lentiginous melanoma"? 
  4. What is "nodular melanoma"? 
  5. What is a "superficial spreading malignant melanoma"? 
  6. Where else in the body does melanoma generally spread? 
 Nonmelanoma Basics 
  1. Dr. Harry Saperstein, MD, FAAD
  2. How common is nonmelanoma skin cancer? 
  3. What is "basal cell carcinoma"? 
  4. What are the types of basal cell carcinoma? 
  5. What is "squamous cell carcinoma"? 
  6. What is "Bowen's disease"? 
  7. Can HPV be a factor in squamous cell carcinoma? 
 Precancerous Skin Lesions 
  1. Dr. Harry Saperstein, MD, FAAD
  2. Is a freckle the same things as a mole? 
  3. Can all brown spots such as freckles become cancerous? 
  4. What is "precancer" of the skin? 
  5. What are "dysplastic nevi"? 

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