Integument L2

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Questions and Answers

Bacterial infections of the skin are often secondary to :

Chronic dermatitis- allergy, parasites, endocrine disease and immunodeficiency

Which of the following correctly matches a superficial pyoderma with its typical presentation?

Greasy Pig Disease – Deep folliculitis
Canine Superficial Spreading Pyoderma – Ring-shaped macules and epidermal collarettes (correct)
Impetigo – Deep nodular abscesses
Intertrigo – Necrotizing vasculitis

Canine superficial spreading pyoderma is a bacterial infection of deep follicles and adjacent skin

False (B)

Impetigo is a :

Superficial pustular dermatitis Signup and view all the answers

Impetigo in puppies is characterized by:

Non-follicular pustules on non-haired skin in otherwise healthy puppies (D) Signup and view all the answers

Which of the following is NOT a common gross finding in canine superficial spreading pyoderma?

Vesicle formation (B) Signup and view all the answers

What is the most common pathogen involved in Greasy Pig Disease?

Staphylococcus hyicus (C) Signup and view all the answers

Greasy pig disease is fatal in neonatal pigs

True (A) Signup and view all the answers

Another name for Greasy pig disease is:

Exudative epidermitis Signup and view all the answers

Which pyoderma is associated with frictional trauma and opportunistic bacterial infection of moist, closely apposed skin surfaces?

Intertrigo (B) Signup and view all the answers

Dermatophilosis is caused by which of the following organisms?

Dermatophilus congolensis (B) Signup and view all the answers

What characteristic microscopic appearance is associated with Dermatophilus congolensis?

"Railroad track" appearance (A) Signup and view all the answers

Which of the following is considered a predisposing factor to Dermatophilosis?

Wet weather in humid climates (“rain rot”) (A) Signup and view all the answers

Hot spots are also known as:

Pyotraumatic Dermatitis Signup and view all the answers

Pyotraumatic dermatitis (hot spots) in dogs are most often associated with what underlying condition?

Flea allergy dermatitis (C) Signup and view all the answers

Describe the gross lesion of a typical hot spot

Moist, alopecic, slightly raised, red and well circumscribed Signup and view all the answers

Which organisms are most likely to cause cutaneous bacterial granulomas?

Actinomyces spp. and Nocardia spp. (B), Mycobacterium spp and Actinobacillus spp (C) Signup and view all the answers

What feature is commonly found grossly in actinomycete mycetomas?

"Sulfur granules" in draining sinuses (B) Signup and view all the answers

Which of the following statements about Actinomycete Mycetomas is TRUE?

They often involve nodules, ulceration, and underlying bone (B) Signup and view all the answers

Folliculitis is best described as:

Inflammation of the hair follicle (A) Signup and view all the answers

Which of the following is NOT a common cause of folliculitis?

Malassezia yeast overgrowth (D) Signup and view all the answers

Over time, severe folliculitis can lead to rupture of the follicle and the release of hair shafts and bacteria into the surrounding dermis. This condition is known as:

Furunculosis (C) Signup and view all the answers

What describes the pathogenesis leading from folliculitis to deep pyoderma?

Persistent follicular infection leads to rupture and spread of bacteria into deeper dermis (B) Signup and view all the answers

___ is a mycobacterial dermatitis caused by the acid-fast intracellular bacteria Mycobacterium

Feline leprosy; lepraemurium Signup and view all the answers

Mycobacterium lepraemurium is an ____________ intracellular organism

Obligate (C) Signup and view all the answers

Which statement best describes opportunistic mycobacterial dermatitis?

It often occurs via wound contamination or traumatic implantation. (C) Signup and view all the answers

Mycobacterial infections in the skin tend to:

Remain localized but can disseminate (B) Signup and view all the answers

What diagnostic methods are used to confirm opportunistic mycobacterial dermatitis?

Culture and sensitivity testing (C) Signup and view all the answers

Canine Leproid Granuloma is most commonly associated with:

Saprophytic mycobacteria (B) Signup and view all the answers

Which of the following is TRUE about Canine Leproid Granuloma?

It often involves nodules on the dorsal pinna. (B) Signup and view all the answers

Which breed is particularly predisposed to developing Canine Leproid Granuloma?

Boxer (B) Signup and view all the answers

Which bacterial genus is commonly associated with papillomatous footrot in livestock?

Treponema (C) Signup and view all the answers

Viral skin infections commonly cause which of the following patterns?

Necrosis or proliferation (or both) (C) Signup and view all the answers

Which virus family is known to cause a sequence of skin lesions progressing from macule to papule to vesicle to pustule?

Poxviruses (C) Signup and view all the answers

What molecule produced by poxviruses contributes to epidermal hyperplasia?

Epidermal growth factor-like protein (B) Signup and view all the answers

If you observe ulcers on the skin during gross examination, what other lesion should you actively look for?

Vesicles (B) Signup and view all the answers

Flashcards

Common causes of secondary bacterial skin infections?

Allergy, parasites, endocrine disease, and immunodeficiency.

Presentation of superficial spreading pyoderma

Ring-shaped macules and epidermal collarettes.