Benign Skin Lesions - Medical Student LC
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Transcript Benign Skin Lesions - Medical Student LC
Benign Skin Lesions
Lisa Publicover
August 2005
Skin Lesions
Skin Lesions
Benign
Nevus
Keratosis
Verruca
Malignant
Fibroma
Hemangioma
Benign Skin Lesions
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
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
Brownish-Red
Rough
Irregular shape
Usually found on sunexposed skin
Potential for Malignant
change
Treatment Includes:
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