Benign skin lesions module Flashcards
seborrheic nevi age of onset
appear in the first three decades of life
seborrheic keratosis age of onset
common after age 30 often multiple, usually begin to appear during and after fourth decade and continue to arise throughout life
location of seborrheic keratosis
anywhere except palms and soles
description of seborrheic keratosis
usually papules or plaques but may be macular
color of seborrheic keratosis
color can vary from black to tan to white to pink
seborrheic keratosis
benign superficial (epidermal) growth sharply marginated and pigmented lesions
are seborrheic keratoses harmful?
no
excoriated seborrheic keratosis
a pink base is revealed
dermatosis papulosa nigra
a new nevus at age 50 is suspicious of
melanoma
how are keratoses removed
cosmetic removal is possible with snipping or electrodessication
use caution in dark skin as freezing can cause
dyspigmentation
stucco keratoses
small white SKs pepper dorsal feet and ankels of older fair skinned individuals
stucco keratoses
how to tell if a lesion is seborrheic keratosis
they are superficial epidermal growths, they have a stuck on quality like a piece of wax pressed onto the skin
age of stucco keratoses onset
older fiar skinned individuals
skin tags
acrochordons
acrochordons
fleshy papules arise in axillae, neck, groin, and eyelids
skin colored to brown
often pedunculated
why do skin tags develop
genetics, obesity, friction
skin tags can be a marker for
insulin resistance
skin tag removal
elective,
could fall off on own if blood supply dies and they necrose
dermatosis papulosa nigra location
arise in dark skin photoypes usually on cheecks and temples
angioma
do cherry angiomas go away
no
location of cherry angiomas
trunk
traumatized cherry angioma
thrombosed therefore mimics melanoma
dermofibroma
dermatofibroma location
common on legs, often multiple, may be induced by minor trauma
characteristics of dermatofibroma
benign spindle cell dermal proliferation looks like a wad of scar tissue under the microscope
firm, scar-like texture
peripheral rim of darkening pigment is common
the dimple sign
when a dermatofibroma is pinched it looks like a dimple
sun spots
solar lentigines
etiology of solar lentigines
sun damage, not cancerous or precancerous, but could identify patients at risk for skin cancer sice its caused by UV light
how to prevent solar lentigines
sun protection
solar lentigines
sebaceous hyperplasia
oil gland overgrowth, yellowish color, umbilication due to growth around a central hair follicle
how many sebaceous hyperplasia
multiple occur over time
name and describe
sebaceous hyperplasia
numerous skin colored or slightly yellow, umbilicated (have a central dell) papules on forehead and central face
