Benign Skin lesions

Question 1

Presentation of dermatofibromas

Answer 1

F > M
Usually on lower legs
Asymptomatic (sometimes itchy/ tender)

Question 2

3 features of dermatofibromas

Answer 2

Freely moving
Firm-to-hard nodules
0.5-1.0 cm diameter

Question 3

Tx for dermatofibromas

Answer 3

Reassure

Remove with elliptical excision/ punch biopsy

Question 4

2 features of haemangiomas

Answer 4

Red/ purple papules/ plaques with normal epithelial surface

Compression causes partial emptying + colour becomes less prominent

Question 5

7 subtypes of haemangioma

Answer 5

Capillary naevus
Port-wine stain
Vin-rose patch
Venous-lake angioma
Cavernous haemangioma
Cherry haemangioma
Telangiectasia

Question 6

3 features of capillary naevi

Answer 6

Salmon pink
Infants
Facial lesions often fade

Question 7

3 features of port-wine stains

Answer 7

Endothelial lined lesion
Contains blood vessels
Does not regress with age

Question 8

2 features of Vin-rose patches

Answer 8

Pale pink

Appears as birthmark

Question 9

3 features of Venous-lake angiomas

Answer 9

Dark blue papules
Sun-exposed areas esp. in elderly
M > F, Often >65

Question 10

2 features of Cavernous haemangiomas

Answer 10

AKA. Strawberry naevi

Often regress by age 1

Question 11

4 features of Cherry haemangiomas

Answer 11

AKA. Campbell de Morgan spots
Abdomen + Chest
Red + slightly elevated
DONT fade with pressure

Question 12

3 features of Telangiectasia

Answer 12

permanent dilatations of groups of capillaries/ venules.
Inherited or associated with atopy, sun damage, CTD, raised oestrogen or venous HTN
Fill from edge

Question 13

Tx of haemangiomas

Answer 13

Reassurance

Excision if cosmetic concern or suspicious

Question 14

Aetiology of seborrhoeic keratoses

Answer 14

Skin ageing

Question 15

5 features of seborrhoeic keratoses

Answer 15

Flat/ raised papule/plaque
mm-cm's diameter
Skin coloured, yellow, grey, brown, black or mixed
Smooth, waxy or warty surface
Solitary or grouped in certain areas

Question 16

Characteristic description of seborrhoeic keratoses

Answer 16

“Stuck on”

Question 17

Common sites of seborrhoeic keratoses

Answer 17

Torso + face

Question 18

Sx of seborrhoeic keratoses

Answer 18

Often asymptomatic

Itchy/ inflamed

Question 19

Ix for seborrhoeic keratoses

Answer 19

Dermoscopy; milia like cysts, fissures, comedy-like openings

Biopsy if suspicious

Question 20

Tx for seborrhoeic keratoses

Answer 20

Reassurance
Betametasone- Itch
Curettage/ cautery- if unsightly
Cryotherapy- if unsightly

Question 21

4 features of epidermoid cysts

Answer 21

Firm, fleshy/ yellowish papule/ nodule fixed to skin surface but typically mobile over deeper layers
Diameter 1–3 cm
A central punctum
Foul-smelling cheesy debris can be expressed from central punctum.

Question 22

Sites of epidermoid cysts

Answer 22

Often central trunk (chest + shoulders) + face
Can occur almost anywhere
Common on scrotum + vulva.
Solitary or multiple

Question 23

Sx of epidermoid cysts

Answer 23

Often asymptomatic

Rupture may cause swelling, redness, + tenderness

Question 24

Tx for epidermoid cyst

Answer 24

Reassurance
Excision if unsightly
Incision + drainage if infected