SG 1: Benign Skin Lesions

Question 1

a pigmented and stuck-on lesion is most likely

Answer 1

• Seborrheic keratosis

Question 2

Seborrheic keratosis is common after what age

Answer 2

• age 30

Question 3

Seborrheic keratosis arises on all body surfaces except

Answer 3

• palms and soles of foot

Question 4

Do Seborrheic keratosis individual lesions go away?

Answer 4

• no

Question 5

Seborrheic keratosis versus nevi and when they appear

Answer 5

• nevi appear in first 3 decades of life

Question 6

a new nevus at age 50 should raise suspicion of

Answer 6

• melanoma

Question 7

treatment of SKs when bothersome

Answer 7

• generally nothing - curetted, frozen, electrodessicated

Question 8

when the SK is excoriated, what do you see?

Answer 8

• a pink base

Question 9

what are dermatosis papulosa nigra

Answer 9

• tiny SKs

Question 10

why do we use caution with freezing SKs on dark skin

Answer 10

• can cause dyspigmentation

Question 11

what are stucco keratosis in what population

Answer 11

• small SKs located on the dorsal feet and ankles - older fair-skinned individuals

Question 12

what are acrochordons

Answer 12

• skin tags

Question 13

what is a fleshy papules arising in the axillae, neck, groin, and eyelid often pedunculated

Answer 13

• skin tag

Question 14

factors for getting skin tags

Answer 14

• genetics - obesity - friction

Question 15

skin tags can also be a marker for

Answer 15

• insulin resistance

Question 16

treatment for skin tags

Answer 16

• elective removal - snipping - liquid nitrogen - electrodessication - may also fall off on their own

Question 17

what is a red mole generally

Answer 17

• cherry angioma

Question 18

at what age do cherry angiomas start to form

Answer 18

• age 30

Question 19

cherry angioma highest concentration where

Answer 19

• the trunk

Question 20

cherry angioma do they go away? are they harmful?

Answer 20

• do not go away - are harmless

Question 21

when cherry angiomas are traumatized and bleed or thrombose they may mimic _______

Answer 21

• melanoma

Question 22

new growths on the leg that are often nicked by shaving. are firm and feel like scar tissue with rim of pigmentation

Answer 22

• dermatofibroma

Question 23

dermatofibromas are common where on the body

Answer 23

• the leg

Question 24

dermatofibroma may be induced by ________

Answer 24

• trauma

Question 25

what benign spindle cell dermal proliferation looks like a wad of scar tissue under the microscope

Answer 25

- dermatofibroma

Question 26

what is the dimple sign of dermatofibroma

Answer 26

- pinch on either side of dermatofibroma and it will "dimple down"

Question 27

what are solar lentigines are they cancerous or precancerous

Answer 27

- sun spots or age spots - no

Question 28

solar lentigines reflect a history of _____ and can identify patients at risk for

Answer 28

- UV exposure - skin cancer

Question 29

treatment for solar lentigines

Answer 29

- no treatment required - cosmetic treatments for those who want it

Question 30

first step for solar lentigines

Answer 30

- sun protection

Question 31

numerous skin-colored or slightly yellow umbilicate papules can be diagnosed as

Answer 31

- sebaceous hyperplasia

Question 32

sebaceous hyperplasia are yellow due to

Answer 32

- sebaceous gland overgrowth

Question 33

sebaceous hyperplasia umbilication due to

Answer 33

- growth around central hair follicle

Question 34

sebaceous hyperplasia - do you have to remove

Answer 34

- not medically required - just cosmetic

Question 35

how to distinguish sebaceous hyperplasia versus basal cell carcinoma

Answer 35

- seborrheic hyperplasia - yellow, umbilication, multiple papules - BCC - solitary, friable, pearly translucent with telangiectasia

Question 36

an itchy lesion that will arise after trauma can be

Answer 36

- keloid

Question 37

what is an overgrowth of scar tissue beyond the original scar site

Answer 37

- keloid

Question 38

keloid most common in what race

Answer 38

- african american

Question 39

keloid most common on what part of the body

Answer 39

- upper trunk - earlobes

Question 40

treatment of keloid

Answer 40

- intralesional steroid injection

Question 41

do we excise keloids? why?

Answer 41

- no - keloid may recur and larger

Question 42

what is a mobile subcutaneous nodule often with overlying punctum that may discharge foul smelling cheese white material

Answer 42

- epidermal inclusion cyst

Question 43

epidermal inclusion cysts arise from

Answer 43

- hair follicles

Question 44

treatment of epidermal inclusion cyst

Answer 44

- incision and drainage

Question 45

epidermal inclusion cyst versus bacterial abscess

Answer 45

- epidermal inclusion cysts do not require oral antibiotics upon rupture - they are sterile

Question 46

what is a tiny epidermoid cyst that often occurs in the face

Answer 46

- milia

Question 47

milia in newborn versus milia in adult

Answer 47

- go away in newborns - persist in adults

Question 48

what are firm, mobile subcutaneous nodules that lack punctum that may enlarge over months to years and do not discharge any material

Answer 48

- pilar cyst

Question 49

pilar cyst compared to epidermal inclusion cyst

Answer 49

- pilar cyst less likely to rupture or get inflammed

Question 50

location of pilar cyst

Answer 50

- nearly always on the scalp

Question 51

treatment of pilar cyst

Answer 51

- elective excision

Question 52

diagnosis of mobile, soft, subcutaneous nodule that lacks any overlying skin change

Answer 52

- lipoma

Question 53

treatment of lipoma

Answer 53

- elective surgery

Question 54

what are lipomas

Answer 54

- collection of fat under the skin

Question 55

genetics of lipomas

Answer 55

- autosomal dominant

Question 56

lipomas begin at what age

Answer 56

- early adulthood