Gross Pathology of Cattle- Respiratory and Urinary

Question 1

Causes of necrotic laryngitis

Answer 1

Fusobacterium necrophorum
Histophilus somni

Question 2

Cause of fibrinonecrotic tracheitis

Answer 2

IBR

Question 3

Gross lesions with Bovine Respiratory Syncytial Virus and parainfluenza 3

Answer 3

Cranioventral collapse
Caudal lung hyperinflation

Question 4

What pathogen causes polyserositis in calves?

Answer 4

E.coli- septicemia

Question 5

Three causes of shipping fever

Answer 5

Mannheimia hemolytica
Bibersteinia trehalosi
Pasteurella multocida
Histophilus somni
Mycoplasma mycoides mycoides SCT
Mycoplasma bovis

Question 6

Gross morph for shipping fever

Answer 6

Fibrinosuppurative pleuropneumonia

Question 7

How to tell Pasteurella and Histophilus from the rest?

Answer 7

Will have sharp line of demarcation without as much fibrin (will be juicy still)

Question 8

How do you tell Mycoplasma mycoides mycoides SCT from the rest?

Answer 8

Unilateral

Question 9

How do you tell Mycoplasma bovis from the rest?

Answer 9

Will look like a bunch of golf balls (tremendous bronchiectasis)

Question 10

Cause of large thrombosis and hemorrhage around pulmonary artery

Answer 10

Ruminal acidosis–>ulceration–>septicemia with fusobacterium–>forms thrombus

Question 11

Morph for atypical interstitial pneumonia

Answer 11

Interstitial pneumonia with emphysema and fibrosis

Question 12

Three causes of atypical interstital pneumonia

Answer 12

1. L-tryptophan, converted to 3-MI in rumen
2. 4-ipomeanol from Fusarium solani on moldy sweet potatoes
3. Hypersensitivity to dictyocaulus viviparus

Question 13

What caues a large cyst in any organ?

Answer 13

Echinococcus granulosus

Question 14

Infectious cause of renal hypoplasia

Answer 14

Bovine pestivirus (BVD)

Question 15

Gross morph for white spotted kidney disease; cause?

Answer 15

Multifocal to coalescing embolic suppurative nephritis; E.coli (gram - sepsis)

Question 16

Gross appearance of Malignant Catarrhal Fever; signalment?

Answer 16

Lymphoproliferative arteritis; Bison***

Question 17

Cause of pyelonephritis

Answer 17

Corynebacterium renale

Question 17

Pyelonephritis is often accompanied by what gross finding?

Answer 17

Hydronephrosis
Cystitis

Question 17

Cause of swollen, pale kidney; other organ affected; breed affected

Answer 17

Congenital mannosidosis; white matter of brain (hypomyelinosis); Salers cattle

Question 18

Cause of dark kidney with yellow fat

Answer 18

Hemoglobinuria- clostridium hemolyticum

Question 19

Cause of granulomatous nephritis

Answer 19

Hairy vetch toxicity (Vicia villosa)

Question 20

Cause of white proliferation in kidney with hydronephrosis

Answer 20

Lymphoma

Question 21

Cause of bladder neoplasia

Answer 21

Bracken fern (Pteridium aquilinum)