Dysplastic nevus
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
A dysplastic nevus, (or naevus; pl. nevi or naevi) is an atypical mole; a mole whose appearance is different from that of common moles. Dysplastic nevi are generally larger than ordinary moles and have irregular and indistinct borders. Their color frequently is not uniform and ranges from pink to dark brown; they usually are flat, but parts may be raised above the skin surface. Dysplastic nevus can be found anywhere, but are most common on the trunk in men, and on the calves in women.
Cancer
According to the National Cancer Institute, doctors believe that dysplastic nevi are more likely than ordinary moles to develop into a type of skin cancer called melanoma. Because of this, moles should be checked regularly by a doctor or nurse specialist, especially if they look unusual; grow larger; or change in color, or outline; or if any changes occur.
Biopsy
When an atypical mole has been identified, a biopsy takes place in order to best diagnose it. Local anesthetic is used to numb the area, then the mole is biopsied. The biopsy material is then sent to a laboratory to be evaluated by a Pathologist.
Atypical Mole Syndrome
Atypical Mole Syndrome is a hereditary condition which causes the person to have a large quantity of moles (often 100 or more) with some dysplastic nevi. This often leads to a higher risk of melanoma, a serious skin cancer.[1] A slight majority of melanomas do not form in an existing mole, but rather create a new growth on the skin. Nevertheless, those with more dysplastic nevi are at a higher risk of this type of melanoma occurrence.[2][3] Such persons need to be checked regularly for any changes in their moles and to note any new ones.
References
- ↑ Burkhart, C.G MPH, MD. Dysplastic nevus declassified; even the NIH recommends elimination of confusing terminology. SKINmed: Dermatology for the Clinician 2(1):12-13, 2003.
- ↑ D.J. Pope, T. Sorahan, J.R. Marsden, P.M. Ball, R.P. Grimley and I.M. Peck. Benign pigmented nevi in children. Arch of Dermatology 2006;142:1599-1604
- ↑ D.E. Goldgar, L.A. Cannon-Albright, L.J. Meyer, M.W. Pipekorn, J.J. Zone, M.H. Skolnick. Inheritance of Nevus Number and Size in Melanoma and Dysplastic Nevus Syndrome Kindreds. Journal of the National Cancer Institute 1991 83(23):1726-1733