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MSCT > Skin morphology > Flashcards

Skin morphology Flashcards

1
Q

What is a macule?

A

Flat, <1cm, can’t feel

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2
Q

What is a patch?

A

Flat, >1cm, can’t feel

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3
Q

What is a papule?

A

Raised lesion, <1cm

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4
Q

What is a plaque?

A

Raised lesion, >1cm

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5
Q

What is a nodule?

A

Deep, palpable, >1cm

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6
Q

What is a vesicle?

A

Raised, fluid filled, <1cm

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7
Q

What is a bulla?

A

Raised, fluid filled, >1cm

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8
Q

What is a pustule?

A

Raised, pus-filled

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9
Q

What are the six dimensions that we describe when identifying a skin lesion?

A

Palpability, color, shape, texture, size, and location

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10
Q

What is the definition of erythematous?

A

Red from inflammation

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11
Q

How do we describe the color of a skin lesion?

A

Actual color; erythematous, hyperpigmented

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12
Q

What is the definition of hyperpigmented?

A

Darkening of the color of the skin

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13
Q

How do we describe the size of a skin legion?

A

Measure solitary lesions; minute/small/medium/large for multiple lesions

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14
Q

What is scale?

A

Accumulated skin (stratum corneum)

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15
Q

What is crust?

A

Dried exudate (blood, serum, pus)

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16
Q

What is excoriation?

A

Trauma due to scratching

17
Q

What is erosion?

A

Superficial depression with loss of epidermis (can be from scratching, picking, or pathopysiological process)

18
Q

What is an ulcer?

A

Depression with loss of epidermis and dermis

19
Q

What is a fissure?

A

Linear cleavage

20
Q

What is lichenification?

A

Thickened, accentuated skin lines

21
Q

What is atrophy?

A

Depression, thinning, and wrinkling

22
Q

What is a scar?

A

Permanent fibrotic change

23
Q

What are the characteristics of vascular/vasculitic lesions?

A

Will not blanch with pressure, diascopy

24
Q

What causes petechial skin lesions?

A

Acute to subacute leakage of capillaries within skin

25
Q

What causes purpuric skin lesions?

A

Acute to subacute leakage of capillaries or smaller/larger vessels within skin

26
Q

What are the characteristics of purpuric skin lesions?

A

Usually larger, may be palpable

27
Q

What are the characteristics of petechial skin lesions?

A

Generally pinpoint to small

28
Q

What causes ecchymotic skin lesions?

A

Subacute to chronic hemorrhage within skin

29
Q

What are the characteristics of petechial skin lesions?

A

Usually larger

30
Q

What are the characteristics of erosions?

A

Loss of part of all of the epidermis, may occur after a vesicle forms and the top peels off, may weep fluid and become crusted, do not scar

31
Q

What are the characteristics of ulcers?

A

Complete loss of the epidermis in addition to part of the dermis, usually heal with scarring

32
Q

What is the difference between distribution and configuration?

A

Distribution describes the anatomic location of the lesion on the body; configuration describes how the lesions are arranged or relate to each other

MSCT (14 decks)

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