Dysplastic nevus physical examination: Difference between revisions
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==Physical Examination and Diagnosis== | ==Physical Examination and Diagnosis== | ||
=== Skin Examination === | |||
Features that characterize a nevus as dysplastic linclude: | |||
* '''A'''symmetry (one half of the lesion does not match the other in terms of shape or color). | |||
* Notched, irregular, or ill-defined '''b'''orders fading into surrounding skin | |||
* Variegated '''c'''olor, with areas of pink, tan, brown, or dark brown. | |||
* Diameter in one dimension >5 mm. | |||
* Prominent macular component, sometimes with a papular center ("fried egg" or "target" appearance). | |||
* Mammillated (cobblestone) topography. | |||
Progression to melanoma most often manifests as a new focal area of deep pigmentation or firm elevation. | |||
=== '''Signature nevus''' === | |||
* In individuals with multiple nevi, the predominant group of nevi that share similar clinical and dermoscopic features defines the "signature nevus". | |||
=== '''Ugly duckling" sign''' === | |||
* The identification of nevi that appear different from the signature nevi, called "ugly ducklings" or "outliers", has been suggested as a screening method for the detection of melanoma in patients with many nevi, including those with many atypical nevi | |||
==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} | ||
Revision as of 21:46, 17 May 2019
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Dysplastic nevus Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Dysplastic nevus physical examination On the Web |
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American Roentgen Ray Society Images of Dysplastic nevus physical examination |
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Risk calculators and risk factors for Dysplastic nevus physical examination |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Faizan Sheraz, M.D. [2]
Overview
The only way to diagnose dysplastic nevus is to remove tissue and check it for dysplasia.
Physical Examination and Diagnosis
Skin Examination
Features that characterize a nevus as dysplastic linclude:
- Asymmetry (one half of the lesion does not match the other in terms of shape or color).
- Notched, irregular, or ill-defined borders fading into surrounding skin
- Variegated color, with areas of pink, tan, brown, or dark brown.
- Diameter in one dimension >5 mm.
- Prominent macular component, sometimes with a papular center ("fried egg" or "target" appearance).
- Mammillated (cobblestone) topography.
Progression to melanoma most often manifests as a new focal area of deep pigmentation or firm elevation.
Signature nevus
- In individuals with multiple nevi, the predominant group of nevi that share similar clinical and dermoscopic features defines the "signature nevus".
Ugly duckling" sign
- The identification of nevi that appear different from the signature nevi, called "ugly ducklings" or "outliers", has been suggested as a screening method for the detection of melanoma in patients with many nevi, including those with many atypical nevi