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Gross Pathology > Gross Pathology of Cattle- GI > Flashcards

Gross Pathology of Cattle- GI Flashcards

1
Q

Two conditions to think of with lack of tooth eruption

A
  1. Osteopetrosis (Red Angus calves)
  2. X-linked Ectodermal Dysplasia (will also lack hair)
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2
Q

Ddx for neoplasm at tip of mandible

A
  1. Ossifying fibroma
  2. Ameloblastic odontoma
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3
Q

Cause of gingivitis and mucositis, necroulcerative

A

Fusobacterium necrophorum

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4
Q

Occasional viral cause of ulcerative gingivitis (around teeth)

A

Bovine pestivirus- mucosal disease (BVD)

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5
Q

Genetic defect leading to mucosal and epithelial ulcerations due to friction

A

Epitheliogenesis imperfecta- defect in laminin V

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6
Q

Differentials for lingual ulcerations

A
  1. Mucosal disease (BVD; bovine pestivirus)
  2. Malignant catarrhal fever (ovine-herpesvirus 2)
  3. Vesicular diseases
  4. Epitheliogenesis imperfecta
  5. Rinderpest (bovine morbillivirus)
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7
Q

Gross lesions in adults with bovine aphthovirus

A

Vesicle formation in oral cavity and feet followed by ulceration

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8
Q

Cause of necrotic laryngitis in calves

A

Calf diptheria (fusobacterium necrophorum)

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9
Q

Predisposing factors to calf diptheria

A

Trauma
IBR
Papular stomatitis virus

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10
Q

Cause of wooden tongue

A

Actinobacillus ligneresii

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11
Q

Morph for wooden tongue

A

Granulomatous glossitis

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12
Q

What causes lumpy jaw?

A

Actinomyces bovis

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13
Q

What causes lumpy jaw in kangaroos?

A

Fusobacterium bovis

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14
Q

Morph for lumpy jaw

A

Osteomyelitis, granulomatous

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15
Q

Oral tumors that can invade bone

A

Fibrosarcoma
Lymphoma
Nasal adenocarcinoma

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16
Q

Term for cleft palate

A

Palatoschisis

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17
Q

Classic lesions with mucosal disease (BVD)

A

Coalescing ulcers that begin on posterior hard palate and extend across
or ulceration in esophagus

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18
Q

Cause of pock-like lesions on soft palate, in pharynx, and gingiva around teeth

A

Parapoxvirus- Bovine Papular Stomatitis

19
Q

Morph for parapoxvirus

A

Multifocal to coalescing necrotizing and proliferative stomatitis

20
Q

Esophageal parasite (2)

A

Gonglyonema pulchrum (red ribbon)
Hypoderma linneatum- migration of gadfly larvae

21
Q

Cause of papillomas in GI

A

Bovine papillomavirus-4

22
Q

Cause of ruminal hyperkeratosis

A

Young age, not on roughage
Vitamin A deficiency
High barley in diet
Chloronated naphthalene

23
Q

How does milk bypass the rumen in calves?

A

Ruminoreticular groove

24
Q

What does bovine herpesvirus 1 (IBR) cause in the forestomachs?

A

Ulceration and mucosal loss

25
Which forestomach is not lined by squamous epithelium?
Abomasum
26
Gross findings with Malignant Catarrhal Fever
NOT mucosal disease Nasal exudate and corneal edema Hemorrhage and ulceration throughout GI tract
26
Ruminal flukes
Paramphistomum cervi
27
Cause of tremendous hemorrhage on outside of rumen
Bovine pestivirus (BVD)
28
A tumor in the esophagus/rumen could be (2)
Fibropapilloma If exposed to ptaquiloside from bracken fern, becomes SCC
29
How to identify omasum
Small papillae and leaves
30
How to identify the abomasum
Characteristic folds without papillae
31
Abomasal mucosal hyperplasia and hypertrophy (Moroccan leather) with mucous (catarrhal) without inflammation
Ostertagus ostertagi
32
What causes thickened abomasal folds
BLV with abomasal lymphoma
33
What causes edematous baggy abomasal folds
Severe parasite infection- hypoproteinemia (Haemonchus contortus)
34
What are the differentials for Peyer's patch necrosis?
Bovine pestivirus- BVD (mucosal disease) Bovine morbillivirus- Rinderpest Acute salmonellosis Bovine adenovirus type 10 (endotheliotropic)
35
Cause of yellow discoloration of ileum (fibrinonecrotic membrane; necrotizing enteritis)
Non-host adapted Salmonella typhimurium (no septicemia) Note: Salmonella dublin is host adapted so causes septicemia
36
What causes hemorrhagic enterocolitis
Coccidiosis- Eimeria auburnensis and Eimeria alabamanensis
37
What entity causes Johne's Disease?
Mycobacterium avium paratuberculosis
38
Disease course of Johne's disease
Animals are infected in first 30 days, but no signs until 2-5 years old; causes rugose pattern in mucosa of gut; causes dystrophic mineralization
39
What causes neonatal bloody scours because they lack trypsin?
Clostridium perfringens type C
40
Small intestinal parasite
Oesophagostamum radiatum
41
Causes of fibrinonecrotic membrane in the colon (2)
Salmonellosis Mucosal disease
42
Causes of fat necrosis (yellow fat that becomes hard)
Fat cattle Japanese black cattle (genetic) Fescue with neotyphodium (fungus) Yellow fat is normal finding in Jerseys and Guernseys
43

Gross Pathology (23 decks)

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