final exam new info integument Flashcards by Charlotte Gillis

Mdx? Name?

MDx: pyogranulomatous dermatitis.

Puppy Strangles (Juvenile sterile granulomatous dermatitis)

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Mdx?

Name?

MDx: granulomatous dermatitis.

Fungal dermatitis

Swamp cancer

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Mdx?

Name?

MDx : pyogranulomatous dermatitis.

Actinomycete Mycetomas

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Mdx? Name?

MDx: granulomatous dermatitis

Mycobacterial Dermatitis Feline leprosy

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Mycobacterial Dermatitis Opportunistic mycobacteriosis

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Boxers have predisposition

Mycobacterial Dermatitis Canine Leproid Granuloma

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Minnie is a culprit of this

“Lick Granuloma” Acral lick dermatitis

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What dz and what are 4 causes of this dz

allergy skin dz

from atopy, food, direct contact, insect bite

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Mdx? if this is allergy skin dz

MDx: Eosinophilic dermatitis with epidermal hyperplasia

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How do you know this chronic dermatitis is from atopy? how would you dx?

intradermal skin test

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true or false These lesions are atopy allergy skin dz

false

self trauma

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This in the pad allergy skin dz is probably from ____

direct contact

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These are characteristic of what type of allergy dermatitis?

insect bite

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This is a dog with ___

flea bite allergy dermatitis

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This is a pattern of lesions in cat allergy dermatitis

miliary dermatitis

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Indolent ulcer – ulcers on upper lips.

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Eosinophilic plaque – discrete red to ulcerated plaques on abdomen or medial thighs. Eosinophilic granuloma – nodules (may be ulcerated) on thighs, face or mouth.

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3 causes of eosinophilic and granulomatous dermatitis

Parasite reaction – Insect bite hypersenstivity – Foreign body reaction

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cutaneous habronemiasis (“Summer sores”

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2 nd most common autoimmune skin disease

Discoid Lupus Erythematosus

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Generalized sub q edema caused by what 3 things?

increased hydrostatic/decreased oncotic pressure due to hypoproteinemia, increased permeability(vasculitis), lymph dysfxn

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Example of ??

sub q edema

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true or false

biopsy is definitive and indicative of subq edema

false

not worth the biopsy

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Primary hemostasis defect (Vasculitis vs thrombocytopenia)

Petechia & Ecchymoses

MDx: Multifocal cutaneous ecchymotic hemorrhages

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Causes – Vasculitis • Erysipelothrix rhusiopathiae • Gram negative septicemias - Salmonella, Pasteurella, E. coli • E. coli shiga toxin 2e (damages endothelium) “Edema Disease” • Spider/snake bite • Drug reaction • Secondary to ulceration – Frost bite – Toxins causing extreme vasoconstriction (ergot)

infarcts

Name dz

Diamond skin disease

Mdx?

MDx: Cutaneous ecchymotic hemorrhages

Type III hypersensitivity immune-mediated vasculitis

Purpura hemorrhagica

this goat doesnt bahhhhh its brrrrrssss

frostbite

these welts are called ____ by real time doctor folk

wheals

What is always the pathological process of wheals

vascular disorder

– superficial dermis

Urticaria (“Hives”)

– dermis + subcutis

Angioedema

Hypotrichosis

Collagen Dysplasia

Epitheliogenesis Imperfecta

Ichthyosis

crocodile cow

Ichthyosis

bilateral symmetrical and hyperpigmentation is an alopecia robably caused by an ____ disorder

endocrine

the thick pink on top is an example

Acanthosis – increased thickness of stratums basale and spinosum • Hyperkeratosis – increased thickness of stratum corneum

if rory was gross she would be getting this ........

Primary Idiopathic Seborrhea

true or false this is an example copper responsive dermatosis

false zinc

this ouchie pig has?????

parakeratosis

these deep crusty lesions are what in a pig

parakeratosis

Dennis's favorite animal the wombat has what the shit going on???

Sarcoptic Mange

You gonna be hugging this nasty fox??

hell no zoonotic Sarcoptic Mange

Raised, irregular patch of thickened skin developing from chronic friction, usually over pressure points

callus

Skin tumor that is not a true neoplasm

Follicular cyst

Skin tumor that is not a true neoplasm

Nodular sebaceous hyperplasia

Skin tumor that is not a true neoplasm

Collagenous hamartoma

Low numbers of spindle cells, some mixed leukocytes

Cutaneous Soft Tissue Sarcomas (spindle cell tumors)

viral genes inactivate host tumor-suppressor proteins • Benign, spontaneously regress • Gross: horny cauliflower-like masses

papillomas

caused by what virus?

canine papillomavirus

What is the Mdx?

cutaneous fibropapillomas

Caused by bovine papilloma virus in horses

sarcoids

sarcoid

solar radiation, chronic injury commonly involved

Squamous cell carcinoma

this occurs at places of chronic fly strike

Bilateral squamous cell carcinoma in ear tips

Benign growth of dogs

Sebaceous adenoma

Benign growth of dogs \>\>\> cats

lipoma

Dog - behavior varies with grade but all considered potentially malignant • Cats, horses - benign • Gross: – Can look like anything – Often resembles inflammation

Mast cell tumors

Dogs, mostly young, but any age • Head, ears, neck, distal forelegs • Gross: dome-shaped • Cyto: round cells • Langerhans’ cell origin (epidermal dendritic antigen-presenting cell) • Benign, often spontaneously regress

histiocytoma

Gross: usually dark brown • Histo: characteristic “junctional change” (in nonulcerated biopsies!)

Melanoma

Pathogenisis?

solar radiation

Epitheliotropic – T-cells • Nonepitheliotropic – T or B cells

cutaneous lymphoma

Name the black pigment

melanin

This hyperpigmentation is indicative of what dz?

endocrine hyperadrenocorticism Cushings

Flea allergy dermatitis can lead to this pigment deposit?

hypermelanosis hyperpigmentation

This dog with discoid lupus is undergoing what pigment change?

hypopigmentation

Name the dz

lethal white syndrome

Is this cow suffering from photosensitization?

no Cow with acquired hypomelanosis (depigmentation) due to copper deficiency

This Arabian Fading Syndrome or vitilgo what is teh Mdx?

MDx: Focal leukoderma/leukotrichia

What is the dz and the Mdx?

MDx: Cutaneous hypopigmentation (leukoderma) Disease: Vitiligo

What pigment is this?

Calicification

Mild granulomatous inflammation surrounds deposits of calcium within the dermal and subcutaneous connective tissue.

calcinosis circumscripta

inherited in the Chinese Shar-Pei – Myxedema with hypothyroidism

Mucinosis

What can cause this?

hypoproteinemia increased permeability vasculitis increased hydrostatic and decreased oncogenic pressure of vessels lymphatic disfxn

How do you tell if this petechial and ecchymoses is from congestion or hemorrhage?

If you press on congestion spot it will blanch out hten become red again If you press on a spot from a hemorrhage it stays red

These infarcts are caused by what dz?

diamond skin dz

Type III hypersensitivity immune-mediated vasculitis • Cause: Streptococcus equi infection (rarely with other infections or vaccinations) • Gross: Red or purple macules or patches (hemorrhage or infarct) in the skin or mucous membranes

Purpura hemorrhagica

dry gangrene can result from this ... Formation of ice crystals which physically disrupt cells – Vasoconstriction and endothelial damage  reduced blood flow  thrombosis  infarction