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Benign Skin Lesions
Lisa Publicover
August 2005
Skin Lesions
Skin Lesions
Benign
Nevus
Keratosis
Verruca
Malignant
Fibroma
Hemangioma
Benign Skin Lesions
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Nevus (a.k.a – Mole)
Keratosis
Verruca (a.k.a – Wart)
Fibroma
Hemangioma
Nevus
 Sometimes referred to as a
mole
 A well circumscribed
mass; usually brown
 Rarely undergo malignant
changes
 Classified by appearance
and depth
 One type of nevus has the
potential to become
malignant. It is called a
dysplastic nevus
Risk Factors for
Malignant Change
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Size change
Colour change
Elevation change
Boarder change
Abnormal sensation
UV light exposure
Bleeding
Discharge
Greater than 20 nevi
Dysplastic Nevi
Family History (Familial Atypical
Mole Syndrome )
Dysplastic Nevi
 Less wellcircumscribed
 Varying shades of
pigmentation
 Often display ABCD
features (asymmetry, irregular
boarder, colour change and a large
diameter)
Keratosis
Keratosis
Seborrheic
Actinic
Keratoacanthoma
Seborrheic Keratosis
 Raised Papular Lesion
 Light brown to dark
brown
 Smooth or pitted
 Low risk of malignant
change
 Treatment Options:
 Cryosurgery
 Scraping/Curetting
 Cauterization
Actinic Keratosis
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Brownish-Red
Rough
Irregular shape
Usually found on sunexposed skin
 Potential for Malignant
change
 Treatment Includes:
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Cryosurgery
Curettage
Topical 5-FU
Excision
Keratoacanthoma
 Rapidly growing
 Elevated lesion with a
central crater or ulceration
 Regress without treatment
 Usually last ~ 4-6 months
 Develops from abnormal
growth of a hair follicle
 Associated with sun
exposeure and damaged skin
Verruca
 a.k.a – Wart
 Self-limited
 Associated with viral
infection
 Often found on the hands
and feet
 Treatment Options:
 Cryotherapy
 Laser vaporization
 Excision
Fibromas
Fibromas
Fibroma
Neurofibroma
Dermatofibroma
Fibroma
 A solid lesion
 Located just below the skin surface
 May or may not involve the skin structures
Dermatofibroma
 A purple-red lesion
 Like an iceberg, in that
there is only a small
portion of the lesion
visible from the skin’s
surface.
 Little-no potential for
malignancy
 Treat only if they cause a
functional impairment
Neurofibroma
 Well-circumscribed, firm,
grey-tan raised lesion
 A benign tumor
 Neuroectodermal origin
 Often associated with the
genetic condition,
neruofibromatosis
Hemangioma
 Abnormal collection of
blood vessels
 Most commonly seen in
infants
 Benign, but can have
phases of rapid growth
 Treat only if the lesion
causes a functional
impairment
 Generally self-limited and
regress with time
Skin Lesions
Skin Lesions
Benign
Nevus
Keratosis
Verruca
Malignant
Fibroma
Hemangioma