Benign Skin Lesions

Question 1

pigmented and stuck on lesions common after 30

Answer 1

seborrheic keratosis

Question 2

sebhorrheic keratosis locations/duration

Answer 2

everywhere but palms and soles, often multiple

dont go away

Question 3

new nevus at 50?

Answer 3

suspicious of melanoma

Question 4

appearance after removing seb keratosis

Answer 4

pink base revealed

Question 5

dermatosis papulosa nigra

Answer 5

tiny SKs, can look like freckles- freezing them can cause dyspigmentation

Question 6

stucco keratoses

Answer 6

small white gray SKs on dorsal feet/ankles of older ppl

Question 7

describe acrochordons

Answer 7

skin tags

fleshy papules in axillae, neck, groin, eyelids

skin colored to brown, pedunculated

Question 8

skin tags are a marker of…

Answer 8

possibly insulin resistance

like acanthosis nigricans

Question 9

3 options for skin tag removal

Answer 9

snipping

liquid nitrogen

electrodessication

Question 10

describe cherry angioma

Answer 10

red mole, usually start around age 30

usually on trunk, dont go away

sometimes bleed or thrombose and look like melanoma

Question 11

benign spindle cell proliferation in dermis, looks like scar tissue

Answer 11

dermatofibroma

Question 12

ways to identify dermatofibroma

Answer 12

often has dark peripheral rim

will dimple down when pinched “dimple sign)

Question 13

solar lentigo (sun spot) significant because…

Answer 13

not malignant, but reflects higher risk of skin cancer, need more sun protection

Question 14

skin colored, yellowish, umbilicated, raised papules

Answer 14

sebaceous hyperplasia

Question 15

what is sebaceous hyperplasia

Answer 15

overgrowth of sebaceous oil gland

Question 16

contrast seb hyperplasia and BCC

Answer 16

BCC tends to be solitary and more friable

seb hyperplasia more yellow, umbilicaiton

Question 17

overgrowth of scar tissue

Answer 17

keloid

Question 18

common keloid pop

Answer 18

AA

Question 19

tx of keloids

Answer 19

excision is bad idea, recur even larger

intralesional steroid first line

Question 20

mobile subcutanous nodule w/ overlying punctum

Answer 20

epidermal inclusion cyst

Question 21

EIC origin/ removal

Answer 21

debris collects w/ sack of hair follicle

need surgery for complete removal

Question 22

EIC complication

Answer 22

can rupture in skin creating abscess, requires incision and drainage

Question 23

tiny epidermoid cyst, often on face

resolve?

Answer 23

milia, cosmetic concern and
easily extracted w/o scarring

usually resolve on newborns, persist on adults

Question 24

slow growing, firm, mobile nodules w/o punctum- no discharge

Answer 24

pilar cyst

Question 25

pilar cyst location

Answer 25

scalp

Question 26

soft, mobile nodule w/o any skin change

Answer 26

lipoma- elective surgical removal

Question 27

lipoma location

Answer 27

trunk and proximal extremities