Skin Cancers: ABCDE’s Of Melanoma (Mayo Clinic)

Moles are a common skin growth, and most are harmless. But changes in moles and other pigmented patches may be the sign of skin cancer, particularly melanoma.

When it comes to early detection, just remember the ABCDEs.

“A” is for asymmetry.

“You want moles to be perfectly symmetrical, such that you could put a mirror right down the middle of it and the image would look the same,” says Dr. Catherine Degesys, a Mayo Clinic dermatologist.

“B” stands for border.

“You want a nice crisp edge to these pigmented lesions and no scalloped edges or indistinct edges,” says Dr. Degesys.

“C” is for color.

“In general, you want moles to be a homogenous color and not have multiple different pigmented areas,” Dr. Degesys adds.

“D” represents the mole’s diameter. Pigmented lesions being greater than 6 millimeters potentially need further evaluation.

“E” is probably the most important, and that corresponds with evolution, says Dr. Degesys.

“Any pigmented lesion or any moles that are changing are something that really needs to be evaluated by a dermatologist.”

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