Benign Skin Lesions Flashcards Preview

Dermatology > Benign Skin Lesions > Flashcards

Flashcards in Benign Skin Lesions Deck (43)
Loading flashcards...
1

What are benign congenital lesions

Strawberry Naevus / Haemangioma
Port Wine Stain - Naevus flammeus
Salmon patch - Naevus simplex

2

What is strawberry naves

Benign developmental vascular tumour (haemangioma)
Most common tumour of infancy

3

What is DDX

Vascular malformation

4

What are the features

Present 2-3 weeks after birth
Oval / round shape
Well defined borders
Multi-lobed
Scarlet colour
Smooth or lobulated
Max size reached within 3-6 months
Common in upper eyelid with orbital extension, face, scalp and back

5

What do you get if 3+ lesions

Full body MRI

6

How do you Rx

Conservative as should resolve
Plastics may be needed to remove loose skin or fibro-fatty deposits

7

What are complications and how do you Rx

Obstruct visual feed
Bleeding
Thrombocytopenia
Ambylopia (lazy eye)
Astigmatism
If causing airway obstruction - may need tracheostomy
Intra-lesional steroid / BB will slow growth if going to obstruct

8

What is a port wine stain

Vascular malformation present from birth
Can be missed due to hyperaemia of neonate

9

What are features

Light pink - dark red / purple
Trigeminal nerve = most common region then upper trunk
Unilateral
Well defined age
Darkens and thickens with age

10

Does it regress

No

11

How do you Rx

Cosmetic camouflage
Lasers to destroy blood vessel under GA

12

What is salmon patch

Vascular malformation

13

What are the features

Macular
Dull pink colour
Irregular border
Linear telangiectasia
Trigeminal distrubtion
Most common on neck, eyed, forehead and nose

14

How do you Rx

Most fade after 1 month
Laser therapy if persist

15

What are sebaceous cyst

Epidermoid
Pilar

16

What are the features

Encapsulated lesion containing fluid
Found under skin
Central pedunctum = Dx
Firm
Mobile
Very common

17

Complications

Can rupture causing inflammation

18

How do you Rx

Excision
Ax / steroid if infected

19

What is chondrodermatitis nodular helicus

Small inflamed hard painful nodule
Upper part of ear
Red / yellow
Crust and scale may form

20

What should you do and why

Biopsy to rule out
BCC
SCC
Keratocanthoma
Acitinic keratosis

21

What causes

Unknown
Repeat damage to ear / trauma / cold exposure
More common in M and increasing age

22

How do you Rx

Reduce pressure on ear
Ax if infected
Topical / intralesional steroid
Cryotherapy
Laser therapy
Curettage and electrocauterization
Surgery if doesn't work

23

What are seborrheic keratosis

Benign epidermal skin lesions
Warty growth
Dry or sclary
Stuck on appearance
Fleshy colour to light brown

24

What do you often have

Multiple lesions +- cherry angioma

25

How do you Rx

Conservative
Cryotherapy or curettage if troublesome
Can mimic melanoma so remove if suspect

26

What is Laser-trelat sign

Abrupt onset of widespread seborrheic keratosis
Signify underlying GI adenocarcinoma
- DO OGD + biopsy

27

What is a dermatofibroma

Benign fibrous nodule
Firm
Pale pink or brown
Can be tender
Tethered to skin
Mobile over fat so will dimple if squeeze

28

How do you Rx

Excision if concern e.g. of melanoma

29

What is a lipoma

Benign tumour of subcutaneous / fatty tissue

30

What is very rare complication

Malignant transformation to liposarcoma