Hematopoetic

Question 1

Canine small intestine. What is the MDx?

Etiology?

Answer 1

Lymphoid depletion, Peyer’s Patch

Canine Parvovirus 2

Question 2

MDx?

Answer 2

Splenic nodular hyperplasia

Question 3

MDx?

Answer 3

Splenic infarct, acute

chronic would be white

Question 4

MDx?

Answer 4

Siderotic plaque, spleen

Question 5

Cow. MDx?

Answer 5

Lymphoma, bone marrow

Question 6

Bovine, Johne’s Disease.

What is represented by the arrows?

Answer 6

Langhan’s type Giant cells

submucosa of distal SI, near ileocecal junction

Question 7

Cat. MDx?

Answer 7

Mediastinal lymphoma/lymphosarcoma

Question 8

Etiology for jowl abscess in pig?

Answer 8

Streptococcus porcinus

Question 9

Cow. MDx?

Etiology?

Name of disease?

Answer 9

Peyer’s Patch necrosis, severe, diffuse, acute, ileum

Etiology: Bovine Viral Diarrhea Virus

NOD: Mucosal Disease

Question 10

Best Ddx for this spleen?

Answer 10

Histiocytic Sarcoma

Question 11

What are your top 3 Ddx’s for a diffusely enlarged spleen that does NOT ooze blood on cut surface?

Answer 11

A. Lymphosarcoma

B. Mast cell tumor (esp in cat)

C. Multiple Myeloma

Question 12

What is the name of the special stain that is used to show hemosiderin pigment in tissues?

Answer 12

Prussian Blue (AKA Perl’s)

Question 13

Classical swine fever will cause _________ of the spleen, whereas African Swine Fever will cause _______ of the spleen.

Answer 13

CSF: Acute infarcts (dark, red)

ASF: Diffuse congestion (dark red-black, diffusely enlarged)