exam 3 integument 1

Question 1

Palpable elevation filled with clear fluid – Vesicle < 1cm – Bulla > 1cm • Causes – Auto-immune dermatoses – Viral infections – Chemical irritants – Burns

Answer 1

Vesicle/Bulla

Question 2

Answer 2

lead to formation of vesicle/bulla…

Question 3

Palpable elevation filled with pus • Cause – leukocyte infiltrate

Answer 3

pustule

Question 4

Dried exudate, serum, blood, and scale that is adhered to the skin surface • Causes – Severe disorders of keratinization – Severe pustular dermatitis – Secondary to ulcers

Answer 4

crust

Question 5

solid, elevated mass < 1cm diameter • Causes – Infiltrate of inflammatory cells – Infiltrate of neoplastic cells – Epidermal hyperplasia – Deposit of mineral

Answer 5

papule

Question 6

>1cm diameter and deeper

Answer 6

nodule

Question 7

coalesced papules

Answer 7

Plaques

Question 8

Answer 8

plaque

Question 9

Answer 9

nodule

Question 10

Loss of epidermis with exposure of dermis • Cause: 2ndary to… – Epidermal necrosis – Inflammation – Infarction – Neoplasia

Answer 10

ulcer

Question 11

Accumulation of loose keratinized cells • Causes – Disorders of keratinization – Chronic dermatitis

Answer 11

scale

Question 12

a circular rim of scale that occurs secondary to rupture of a vesicle, pustule, or papule

Answer 12

Epidermal collarette –

Question 13

Thickening and hardening of the skin • Causes – Chronic irritation/inflammation

Answer 13

Lichenification

Question 14

Answer 14

inflam

Question 15

What should u do for biopsy

Answer 15

Question 16

What should u not do with collecting biopsy

Answer 16

Question 17

Answer 17

St Johns Wort

Question 18

Question 19

Answer 19

photosensitization because on ly on white fur

Question 20

Answer 20

Solar injury

Question 21

Answer 21

“solar/actinic keratosis”

Question 22

This squamous cell carcinoma can be a result of ___

Answer 22

solar injury from years before

Question 23

1 st degree – epidermis – Reddened/darkened necrotic epidermis – Complete healing • 2 nd degree – epidermis and dermis – Vesicle formation – Some adnexa are preserved allowing epidermal regeneration with some scarring • 3rd degree – full thickness epidermis and dermis +/- subcutis – Sloughing of necrotic tissue, followed by granulation tissue – Scar; life threatening (fluid/protein loss and portal for sepsis)

Answer 23

thermal burns

Question 24

what degree?

Answer 24

3

Question 25

Caused by body or wound secretions, application of drugs, exposure to acids, alkalies, soaps, detergents, or irritant plants. Chem burn in st kitts on the backs of animals after it rains from toxins in the

Answer 25

Manchineel tree

Question 26

Pathogenesis thought to involve type IV hypersensitivity towards antigens of the surface of keratinocytes inducing apoptosis – induced via antigenic mimicry from drug administration, underlying infection, neoplasia, dyes/preservatives in pet foods? – Histologically distinct – Gross: Widespread coalescing erythematous macules  vesicles and ulcers

Answer 26

Erythema Multiforme & Toxic Epidermal Necrolysis