dysplastic nevus

(redirected from Dysplastic Nevi)

dys·plas·tic ne·vus

a nevus exceeding 5 mm in diameter, with irregular, indistinct, or notched borders and mixed tan-to-black and pink-to-red color. Microscopically these are basally nested and scattered intraepidermal melanocytes with hyperchromatic nuclei larger than those of basal keratinocytes. If multiple and associated with a family history of melanoma, these nevi have a high risk of malignant change, but isolated dysplastic nevi in the absence of a family history of melanoma are less frequently premalignant.
See also: malignant mole syndrome.
See: dysplastic nevus syndrome.

dysplastic nevus

an acquired atypical nevus with an irregular border, indistinct margin, and mixed coloration, often occurring in large numbers and often a precursor of malignant melanoma.
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Dysplastic nevus

dysplastic nevus

Dermatology A premalignant skin lesion characterized by irregular, > 5 mm in diameter macules numbering from a few to hundreds with a central papule, variegated dark color and lenticular changes

dys·plas·tic ne·vus

(dis-plastik nēvŭs)
Skin malformation exceeding 5 mm in diameter, with irregular, indistinct, or notched borders and colored tan-to-black and pink-to-red.
References in periodicals archive ?
Sometimes these tales are even more riveting than atopic dermatitis or mildly dysplastic nevi.
A nevus is a mole, and abnormal moles are called dysplastic nevi.
performed an immunohistochemical study, analyzing the expression of CEACAM1 in benign and malignant cutaneous tumors and in normal peritumoral skin: benign nevi (42 cases), dysplastic nevi (22 cases), thin superficial spreading melanomas (21 cases), and thick superficial spreading melanomas (21 cases).
Such nevi include dysplastic nevi (DN), congenital MN, and, to a lesser extent, acquired (common) MN (1).
Malignant and potentially malignant diagnoses to consider include pigmented basal cell carcinoma, pigmented squamous cell carcinoma, carcinoma metastatic to the skin, and dysplastic nevi.
MYB1 loss appears particularly common in spitzoid neoplasms and is rare in dysplastic nevi, whereas the opposite seems to be true for RREB1.
There are two basic types of precancerous lesions associated with skin cancer: actinic keratoses and dysplastic nevi.
KYOTO, JAPAN -- Blue-light phototherapy for neonatal jaundice could promote development of dysplastic nevi, Dr.
Dysplastic melanocytic nevi contain high levels of pheomelanin: quantative comparison of phaeomelanin/eumelanin levels between normal skin, common nevi, and dysplastic nevi.
George Hollenberg, MD, an authority in the fields of pathology, clinical pathology, and dermatopathology, has expertise in the areas of dysplastic nevi, melanoma, prostate, and gastrointestinal cancer.
We now know that these dysplastic or atypical nevi are markers for melanoma, so when we as dermatologists see a person with multiple dysplastic nevi, we monitor them much more carefully for the development of melanoma.
Even with no dysplastic nevi, persons with 25 or more small nevi (more than 2 mm but less than 5 mm in diameter) are approximately twice as likely to develop melanoma as those with less than 25.