Pathology of Integument Pt 5 Flashcards
What is nodular / diffuse dermatitis? What are the subcategories it can fall under (causes)?
What is seen in this image? What is being indicated by the black arrows?
Nodular / diffuse dermatitis
What can be seen in this image? What are the typical lesions that are associated with this condition?
Nodular / diffuse dermatitis
Lesions: Nodular or plaque like lesions that may be alopecic, ulcerated, draining.
What diagnostics can be used for nodular/ diffuse dermatitis? What should your sample consist of? What are the different techniques?
What is canine leproid granuloma? What breeds are affected typically? What do the lesions typically look like? What kind of stain can it be detected with?
Canine leproid granuloma
• Cause: novel mycobacterial species.
• Most commonly affects short coated large breeds such as Boxers
• Pinnae
• Single to multiple well circumscribed, firm, nonpainful dermal nodules
• Pyogranulomatous dermatitis with intralesional acid-fast positive bacteria
What can be seen in this image?
- canine leproid granuloma
What is seen in this stain? What is the stain on the right?
This is a stain of canine leproid granuloma. The stain on the right is acid fast stain
What can be seen with deep or systemic fungal infection? What are the typical lesions? What are they caused by?
Deep and/or systemic fungal infection
• Usually cutaneous lesions are secondary to systemic infection (lungs, eyes, bones)
• Ingestion or inhalation from contaminated soil
• Examples:
• Cryptococcus neoformans
• Histoplasma capsulatum
• Blastomyces dermatitidis
• Coccidioides immitis
What is causing the lesion in this cat?
What is causing the lesion in this cat?
What is the cause of this lesion in this dog?
What is the cause of this lesion in this dog?
What can be seen in this histological slide that is indicated by the black arrow?
What can be seen in this histological slide that is indicated by the black arrow?
What can be seen in this histological slide that is indicated by the black arrow?
What can be seen in this histological slide that is indicated by the black arrow?
What is pythiosis? Where can the causative agent be found? What do the lesions look like? What kind of inflammation is present?
What condition is seen in these images?
Pythiosis
What is leishmaniasis? How can it be transmitted? What are the classic lesions for this issue? What changes can be seen on bloodwork?
Leishmaniasis
* Leishmania sp. (L. infantum) ; obligate intracellular protozoa
* Transmission: Bite of a sandfly * Zoonotic disease
* Cutaneous and systemic disease
* Alopecia, ulcers, nodules, exfoliative dermatitis; muzzle, periorbital and aural regions, onychogryphosis
* Blood work: hyperproteinemia with hypergammaglobulinemia and
hypoalbuminemia
What can be seen in this image? What is the arrow pointing to?
What is habronemiasis? What is the causative agent? How is it transmitted? When do you see these lesions? What do the lesions look like?
What are examples of non-infectious diffuse/nodular dermatitis?
- Sterile granulomatous dermatitis and lymphadenitis
- Eosinophilic granuloma
What is sterile granulomatous dermatitis and lymphadenititis? What breeds is it seen in? What age? What lesions are seen? What are the clinical signs? What causes it?
What is sterile granulomatous dermatitis and lymphadenititis?
Responsive to
immunosuppressive drugs
Where is pythiosis seen commonly in dogs? What about in horses?
Dogs (GI > skin)
horses (skin > GI)
What is eosinophilic granuloma complex ? What can be seen in cats with this condition?
What is seen in this image?
indolent ulcer from eosinophilic granuloma complex
What is the cell being indicted by the black arrow?
What is seen in this image? What is being indicated by the black arrow?
What is panniculitis? What are some causes?
What is occuring in this image?
What can be seen in this image? What is the cause?
Panniculitis ( Nodules seen here)
What can be seen in this image? What is the cause?
Panniculitis
What is the diagnostic used to determine panniculitis? How is it done?
What is sterile nodular panniculitis? What breeds are typically affected? Where do the lesions occur? What signs can be seen? What diagnostics can be used? What kind of lesions seen? What is the cause?
What is occurring in this image? What is indicated by the black arrow?