Dysplastic nevus: Difference between revisions
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{{SI}} | |||
{{Infobox medical condition | |||
| name = Dysplastic nevus | |||
| image = [[File:Dysplastic_nevus_-_add_-_high_mag.jpg|left|thumb|Dysplastic nevus under high magnification]] | |||
| caption = Dysplastic nevus under high magnification | |||
| field = [[Dermatology]] | |||
| synonyms = [[Atypical mole]], [[Clark's nevus]] | |||
| symptoms = [[Asymmetry]], [[irregular borders]], [[color variation]], [[diameter]] > 5 mm | |||
| complications = Increased risk of [[melanoma]] | |||
| onset = Usually during [[adolescence]] | |||
| duration = [[Chronic (medicine)|Chronic]] | |||
| causes = [[Genetic predisposition]], [[UV radiation]] | |||
| risks = [[Family history]] of [[melanoma]], [[sun exposure]] | |||
| diagnosis = [[Dermatoscopy]], [[biopsy]] | |||
| differential = [[Melanoma]], [[common nevus]] | |||
| prevention = [[Sun protection]], regular [[skin examination]] | |||
| treatment = [[Excision (surgery)|Excision]] if suspicious | |||
| frequency = Common in [[Caucasian]] populations | |||
}} | |||
'''Dysplastic nevus''' is a type of [[mole]] that is larger than normal (larger than a pencil eraser) and irregular in shape. It tends to have uneven color with dark brown centers and lighter, uneven edges. These moles tend to be hereditary (inherited from parents). People with dysplastic nevi may have more than 100 moles and have a greater chance of developing [[melanoma]], a serious form of [[skin cancer]]. | '''Dysplastic nevus''' is a type of [[mole]] that is larger than normal (larger than a pencil eraser) and irregular in shape. It tends to have uneven color with dark brown centers and lighter, uneven edges. These moles tend to be hereditary (inherited from parents). People with dysplastic nevi may have more than 100 moles and have a greater chance of developing [[melanoma]], a serious form of [[skin cancer]]. | ||
== Causes == | == Causes == | ||
The exact cause of dysplastic nevus is not known. However, it is believed to be influenced by a combination of genetic and environmental factors. Exposure to [[ultraviolet]] (UV) radiation from the sun and from tanning lamps and beds is a risk factor for all types of moles. | The exact cause of dysplastic nevus is not known. However, it is believed to be influenced by a combination of genetic and environmental factors. Exposure to [[ultraviolet]] (UV) radiation from the sun and from tanning lamps and beds is a risk factor for all types of moles. | ||
== Symptoms == | == Symptoms == | ||
Dysplastic nevi often look different from common moles. A dysplastic nevus can have a mixture of several colors, from pink to dark brown. It is usually flat with a smooth, slightly scaly, or pebbly surface, and it has an irregular edge that may fade into the surrounding skin. | Dysplastic nevi often look different from common moles. A dysplastic nevus can have a mixture of several colors, from pink to dark brown. It is usually flat with a smooth, slightly scaly, or pebbly surface, and it has an irregular edge that may fade into the surrounding skin. | ||
== Diagnosis == | == Diagnosis == | ||
A [[dermatologist]] can often identify a dysplastic nevus by its distinctive appearance. If there is any doubt, the dermatologist will perform a [[biopsy]] to make a definitive diagnosis. | A [[dermatologist]] can often identify a dysplastic nevus by its distinctive appearance. If there is any doubt, the dermatologist will perform a [[biopsy]] to make a definitive diagnosis. | ||
== Treatment == | == Treatment == | ||
If a dysplastic nevus is suspected to be developing into a melanoma, it should be removed. However, if a dysplastic nevus does not change over time, there is no need for treatment. | If a dysplastic nevus is suspected to be developing into a melanoma, it should be removed. However, if a dysplastic nevus does not change over time, there is no need for treatment. | ||
== Prevention == | == Prevention == | ||
The best way to prevent dysplastic nevus and skin cancer is to protect the skin from the sun and other sources of UV radiation. | The best way to prevent dysplastic nevus and skin cancer is to protect the skin from the sun and other sources of UV radiation. | ||
== Gallery == | |||
<gallery> | |||
File:Dermatoscope1.JPG|Dermatoscope used for examining skin lesions | |||
File:Dermatoscope.jpg|Dermatoscope | |||
File:WB032021.JPG|Dysplastic nevus | |||
File:Pie_chart_of_incidence_and_malignancy_of_pigmented_skin_lesions.png|Pie chart of incidence and malignancy of pigmented skin lesions | |||
File:Dysplastic_nevus_-_low_mag.jpg|Dysplastic nevus under low magnification | |||
File:Dysplastic_nevus_-_intermed_mag.jpg|Dysplastic nevus under intermediate magnification | |||
File:Dysplastic_nevus_-_add_-_very_high_mag.jpg|Dysplastic nevus under very high magnification | |||
</gallery> | |||
== See also == | == See also == | ||
* [[Melanoma]] | * [[Melanoma]] | ||
* [[Skin cancer]] | * [[Skin cancer]] | ||
* [[Mole (skin marking)]] | * [[Mole (skin marking)]] | ||
* [[Ultraviolet]] | * [[Ultraviolet]] | ||
== References == | == References == | ||
<references /> | <references /> | ||
[[Category:Skin conditions]] | [[Category:Skin conditions]] | ||
[[Category:Dermatology]] | [[Category:Dermatology]] | ||
[[Category:Cancer]] | [[Category:Cancer]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 19:32, 5 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Dysplastic nevus | |
|---|---|
| Synonyms | Atypical mole, Clark's nevus |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Asymmetry, irregular borders, color variation, diameter > 5 mm |
| Complications | Increased risk of melanoma |
| Onset | Usually during adolescence |
| Duration | Chronic |
| Types | N/A |
| Causes | Genetic predisposition, UV radiation |
| Risks | Family history of melanoma, sun exposure |
| Diagnosis | Dermatoscopy, biopsy |
| Differential diagnosis | Melanoma, common nevus |
| Prevention | Sun protection, regular skin examination |
| Treatment | Excision if suspicious |
| Medication | N/A |
| Prognosis | N/A |
| Frequency | Common in Caucasian populations |
| Deaths | N/A |
Dysplastic nevus is a type of mole that is larger than normal (larger than a pencil eraser) and irregular in shape. It tends to have uneven color with dark brown centers and lighter, uneven edges. These moles tend to be hereditary (inherited from parents). People with dysplastic nevi may have more than 100 moles and have a greater chance of developing melanoma, a serious form of skin cancer.
Causes[edit]
The exact cause of dysplastic nevus is not known. However, it is believed to be influenced by a combination of genetic and environmental factors. Exposure to ultraviolet (UV) radiation from the sun and from tanning lamps and beds is a risk factor for all types of moles.
Symptoms[edit]
Dysplastic nevi often look different from common moles. A dysplastic nevus can have a mixture of several colors, from pink to dark brown. It is usually flat with a smooth, slightly scaly, or pebbly surface, and it has an irregular edge that may fade into the surrounding skin.
Diagnosis[edit]
A dermatologist can often identify a dysplastic nevus by its distinctive appearance. If there is any doubt, the dermatologist will perform a biopsy to make a definitive diagnosis.
Treatment[edit]
If a dysplastic nevus is suspected to be developing into a melanoma, it should be removed. However, if a dysplastic nevus does not change over time, there is no need for treatment.
Prevention[edit]
The best way to prevent dysplastic nevus and skin cancer is to protect the skin from the sun and other sources of UV radiation.
Gallery[edit]
-
Dermatoscope used for examining skin lesions
-
Dermatoscope
-
Dysplastic nevus
-
Pie chart of incidence and malignancy of pigmented skin lesions
-
Dysplastic nevus under low magnification
-
Dysplastic nevus under intermediate magnification
-
Dysplastic nevus under very high magnification
See also[edit]
References[edit]
<references />
