Lesion Types, Shapes, and Patterns Flashcards Preview

Dermatology > Lesion Types, Shapes, and Patterns > Flashcards

Flashcards in Lesion Types, Shapes, and Patterns Deck (47)
Loading flashcards...
0

Macule

Flat Lesion
Any change in skin color that is not palpable.
(not raised or depressed)

1

Patch

Flat Lesion
Similar to a macule, but quite large, OR slightly raised plaque

2

Papule

Raised Lesion
Elevated, superficial, and solid lesion
<0.5 cm

3

Plaque

Raised Lesion
A plateau-like elevation, usually well defined.

4

Nodule

Raised Lesion
Solid, larger and often starting at a deeper level than a papule.

5

Wheals

Raised Lesion
Pink papules or plaques that change or disappear within hours

6

Comedones

Raised Lesion
Dilated and plugged hair follicles

7

Horn

Raised Lesion
Conical Mass

8

Scar

Raised Lesion
Proliferation of fibrous tissue that replaces normal collagen after a wound that breaches the dermis

9

Cyst

Fluid filled lesion
Encapsulated cavity containing fluid or semisolid material

10

Vesicle

Fluid filled lesion
Clear fluid filled cavity, <0.5 cm, often thinned roofed

11

Bulla (Blister)

Fluid filled lesion
Clear fluid filled cavity, >0.5 cm, often thinned roofed

12

Pustule

Fluid filled lesion
Cavity is filled with purulent exudate

13

Abscess

Fluid filled lesion
Accumulation of purulent material deep in the dermis or subcutaneous tissue, often fluctuant

14

Erosion

Depressed Lesion
Loss of a portion of the epidermis, usually moist, won't scar

15

Ulcer

Depressed Lesion
Loss of the epidermis and part of the dermis, heals with scarring

16

Atrophy

Depressed Lesion
Diminution of epidermal cells resulting in thinning, glossy, transparent, and wrinkled appearance

17

Poikiloderma

Depressed Lesion
Atrophy combined with pigmentary changes

18

Striae

Depressed Lesion
Linear depressions that occur from rapid stretching of the skin

19

Sclerosis

Depressed Lesion
A diffuse, slightly depressed, hardened area of skin

20

Scale

Lesions with Surface Changes
Flakes of skin

21

Crust

Lesions with Surface Changes
Develop when serum, blood, or purulent exudate dries on the skin surface

22

Excoriations

Lesions with Surface Changes
Surface excavations that result from scratching

23

Lichenification

Lesions with Surface Changes
Thickening of the epidermis and some changes in the dermis may be due to continual rubbing of the skin

24

Purpura

Vascular Lesions
Reddish-purple lesion that is non-blanchable, indicating blood having left the vessels and moving through other tissues

25

Petechiae

Vascular Lesions
Pinpoint purpura

26

Ecchymosis

Vascular Lesions
Large purpura; bruise

27

Telangiectasia

Vascular Lesions
Persistent dilations of small capillaries. May or may not be blanchable.

28

Angioma

Vascular Lesions
Benign tumor with blood vessels; some types blanch others don't

29

Annular

ring-shaped; the edge differs from the center