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Doctor insights on: Melanoma In Armpit

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Is it possible to get melanoma skin cancer in your armpit where the sun never shines?

Is it possible to get melanoma skin cancer in your armpit where the sun never shines?

Unfortunately yes: Melanomas are most commonly caused by sun exposure, but they rarely do appear in strange places...I have seen/known patients who have had melanomas come up under their fingernails, in the mouth or sinuses, etc. If you notice any moles on your body which are changing, have them looked at. ...Read more

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Dr. Mike Bowman
955 Doctors shared insights

Skin Cancer (Definition)

A condition in which some element of your skin--which is one of the most complex organs in the body--degenerates into cancer. The three most common types of skin cancer are: basal cell, squamous cell, and melanoma which occur in that order and degree of aggressiveness. Although heredity plays a major role, sun exposure and tobacco use and ...Read more


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My dermatologist found a melanoma on my arm. She will remove it tomorrow, how long till I know how serious it is?

My dermatologist found a melanoma on my arm. She will remove it tomorrow, how long till I know how serious it is?

Less than a week: If most of the lesion was sampled with a biopsy first then the severity or stage of the melanoma is known. Melanoma in situ and thin melanomas are excised with appropriate margins and the cure rate is extremely high. Once the dermatologist removes the lesion with appropriate margins there is a small chance that the pathologist may upstage the melanoma. It takes about a week to get results back. ...Read more

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Pinkish mark on arm...now bigger and purple...melanoma cancer?

Pinkish mark on arm...now bigger and purple...melanoma cancer?

Dermatologist: If this skin lesion stands out from any other skin lesions and doesn't recede, get it checked by a dermatologist for peace of mind. ...Read more

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Worried about a mole on my arm, it may be melanoma. How to tell?

Worried about a mole on my arm, it may be melanoma. How to tell?

See a Dermatologist: Dermatologists are specialists on all types of skin conditions and can evaluate the mole on your arm. They can let you know if the lesion needs to be biopsied to see if it is, or is not, a melanoma. ...Read more

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Can Melanoma appear as a 1 inch irregular diameter blue/grey bruise? On the upper outside arm?

Can Melanoma appear as a 1 inch irregular diameter blue/grey bruise? On the upper outside arm?

Melanoma/bruise: Melanoma can appear anywhere. The color is usually dark brown/black and irregular. Melanomas can be flat or a bump but don't usually have a bruise unless there has been trauma to the area on top of it. A bruise is caused by bleeding under the skin. A bruise can become dark, but eventually becomes lighter, green and then yellow. It will go away. If the lesion bleeds or gets larger, see a doc ...Read more

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Would melanoma from upper arm (pt2a 1.3mm superficial spreading, no ulceration) spread to node under chin?

Would melanoma from upper arm (pt2a 1.3mm superficial spreading, no ulceration) spread to node under chin?

Not likely but...: Melanoma doesn't always spread in a predictable manner. Even though your tumor was small and superficial. You should complete your staging work up with a pet or pet/ct scan to evaluate any risk of disease elsewhere. ...Read more

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I picked off a small mole looking spot off of my arm (2mm.) I couldn't have picked off melanoma right? It came off easily and has been there 3+ years.

I picked off a small mole looking spot off of my arm (2mm.) I couldn't have picked off melanoma right? It came off easily and has been there 3+ years.

Mole: Give the area some time to heal, say 2 w ekes, then see a dermatologist to have the area checked. It is not possible to say what was removed by your fingernails, but melanoma is unlikely. Not a good idea to pick at skin lesions. ...Read more

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Pinkish red pimple like bump on my arm. What are the odds of nodular melanoma appearing this way? It has been there about a week.

Bump: A red bump of short duration may represent a pimple or cyst to name a couple of diagnoses. If the lesion persists for more than a few weeks, it should be diagnosed by a dermatologist to make sure it is not a nodular melanoma (typically but not always black in color) or basal cell carcinoma (bleeding, pearly, non healing growth). ...Read more

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I have a small mole on my right arm. It's always been slightly raised. Seems different now though. Looks half white, half brown. Melanoma?

I have a small mole on my right arm. It's always been slightly raised. Seems different now though. Looks half white, half brown. Melanoma?

Get it checked it: It is unlikely to be melanoma, however, it is not feasible to know without examining the lesion. If a mole changes color, it should be looked at by a doctor to ascertain if the lesion should be removed and the tissue examined by a pathologist. ...Read more

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Can a normal brown mole that turns black with an irregular red border overnight be all of a suddden melanoma? Could it be from a rhogam shot the day before in the same arm?

Can a normal brown mole that turns black with an irregular red border overnight be all of a suddden melanoma? Could it be from a rhogam shot the day before in the same arm?

Have it checked: Unless the injection was directly into the mole, an injection in same arm at another site should not have caused the changes you described. Please have it checked asap. ...Read more

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I had laser hair removal on my arm and now my mole looks puffed up, could this be a melanoma?

I had laser hair removal on my arm and now my mole looks puffed up, could this be a melanoma?

Unlikely: Laser treatment will not cause a melanoma. The mole I assume was in the area where the hairs were lasered and probably received some of the energy and got a little inflamed. If it were a melanoma, then it would have had to been that way prior to the laser treatment. ...Read more

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There is a mole on my back. A surgeon told me its not melanoma. Around it there is pain and it causes pain to my right arm too. Infection?

There is a mole on my back. A surgeon told me its not melanoma. Around it there is pain and it causes pain to my right arm too. Infection?

Need exam: Now that you know what the mole "isn't", I would ask him/her what it "is". It sounds like you are have enough symptoms to warrant removing the mole and examining it under a microscope to see what it is. An infection should cause the skin to turn red, with swelling, and pus drainage. ...Read more

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Noninvasive melanoma 8yrs ago on arm pain/tingling there now Dr says its scar tissue from the surgery...thoughts? Have rotator cuff tear same area

Noninvasive melanoma 8yrs ago on arm pain/tingling there now Dr says its scar tissue from the surgery...thoughts? Have rotator cuff tear same area

Symptoms not due to: Melanoma in situ or lentigo maligna was cured 8 years ago. Symptoms related to shoulder or neck. Should be checked yearly by dermatologist. Cured from 1 skin cancer= increased risk of future skin cancer. ...Read more

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Melanoma and eye exams. My father had a zero stage melanoma removed from his arm about 5 years ago. Should he be seeing an eye doctor regularly to check for melanoma in his eye tissue? I keep trying to get him to the eye doctor - he clearly needs glasse

Melanoma and eye exams. My father had a zero stage melanoma removed from his arm about 5 years ago. Should he be seeing an eye doctor regularly to check for melanoma in his eye tissue? I keep trying to get him to the eye doctor - he clearly needs glasse

Sure: It is unlikely that he will develop melanoma in the eye. But he should definitely see his eye for an exam and to get those glasses. Also he should be seeing a dermatologist several times a year. Once you develop on melanoma, you are more likely to develop more. ...Read more

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What is the lump in my armpit? Can this be an early sign of skin cancer?

Armpit Lump: A lump in the armpit could be an enlarged lymph node due to a skin cancer in the upper extremity or trunk. It could also be caused by a cancer in the breast. I recommend that you see your primary care physician to have this lump checked out. ...Read more

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Dr. Travis Kidner
2,631 Doctors shared insights

Melanoma (Definition)

Cancer of the melanocyte cells. Melanocyte cells determine the color of your skin. Although these cells are primarily found in your skin, they can also be found in the bowel ...Read more


Axilla (Definition)

Area of human body directly under the joint where the shoulder connects to the arm. It contains axillary vessels, brachial nerve plexus, lymph nodes & vessels, axillary ...Read more