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Gross Pathology > Gross Pathology of GI > Flashcards

Gross Pathology of GI Flashcards

1
Q

What causes a proliferative and necrotizing lesion in the mouth, lips, gingiva, hard palate of sheep and goats?

A

Parapoxvirus- contagious ecthyma

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2
Q

What causes orogenital lesions in primates?

A

Macacine herpesvirus type 1

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3
Q

What causes oral lesions in cats

A

Either Eosinophilic granuloma complex or feline chronic gingivostomatitis
Calicivirus and uremia cause ulcerative glossitis

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4
Q

What can cause erosive gingivitis in a NHP?

A

Shigella flexneri

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5
Q

Differential list for bovine oral lesions

A

BVD
IBR
FMD

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6
Q

Cause of necrotic stomatitis in snakes

A

Pseudomonas aeruginosa

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7
Q

What causes necrotizing stomatitis in Eastern box turtles?

A

Frog ranavirus 3

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8
Q

What causes exudative necrotizing stomatitis in birds (not proliferative)

A

Trichomonas gallinae
Called canker in pigeons, frounce in raptors

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9
Q

Cause of wooden tongue

A

Actinobacillus ligneresii

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10
Q

Most common odontogenic tumor of cattle? Location?

A

Ameloblastic fibroma; Mandibular incisors

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11
Q

Disease caused by actinomyces bovis? Morph?

A

Lumpy jaw; proliferative granulomatous osteomyelitis

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12
Q

Cause of hyperplastic bone proliferation that’s red (unmineralized)

A

Fibrous osteodystrophy

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13
Q

Cause of hyperplastic bone proliferation that’s white (mineralized)

A

Osteopathy

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14
Q

Bony tumor on occipital bone, hard palate, or facial bones

A

Multilobular tumor of bone

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15
Q

Where can you find spirocerca lupi?

A

Esophagus, aorta, periosteum of vertebral body- red worms!

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16
Q

Ribbon candy worm of esophagus

A

Gonglyonema pulchrum

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17
Q

Cause of proventricular dilation syndrome in Macaws; morph

A

Avian bornavirus; polyganglioneuritis

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18
Q

What causes papillomas in birds?

A

Psittacid herpesvirus 1- NOT PAPILLOMAVIRUS

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19
Q

Cause of edema disease in pigs; classic lesion; age

A

Enteropathogenic e.coli- shiga toxin producing; mesocolonic and gastric edema; weaner

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20
Q

Cause of red colon or stomach or any GI in a macaque; Other species of this organism? Virulence factor?

A

Shigella flexneri- don’t forget gingiva!
S. dysenteriae, boydii, sonii
Shigella

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21
Q

Cobblestone stomach (chronic gastritis) in horses? cows? sheep? cat? pig? (Stomachworms)

A

Trichostrongylus axei; Ostertagia ostertagi; Teladorsia ostertagi; Ollulanus tricuspis; hyostrongylus rubidus

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22
Q

Habronema muscae is either found in the ________ or _________ of a horse

A

Gastric mucosa or skin

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23
Q

Cause of focal granuloma on glandular side of margo plicatus in a horse; NHPs?

A

Draschia megastoma; Nochtia nochti

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24
Q

White worm that looks like an ascarid in the stomach of a cat with gastric ulceration

A

Physaloptera (spirurid)

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25
Pigeon with red granulomas in proventricular glands
Tetrameres americana
26
Where do leaf-eating monkeys get amoeba?
Stomach
27
Cause of catarrhal gastritis in a snake; histology?
Cryptosporidium serpentis; massive mucous neck cell hyperplasia
28
Cause of anemia and pallor in sheep/goats? In cattle?
Haemonchus contortus; Haemonchus placei
29
Cause of abomasal ulceration in ruminants
Clostridium perfringens type A
30
Cause of hemorrhagic enteritis in turkeys? Associated lesions
Siadenovirus; marble spleen, liver necrosis
31
Cause of necrohemorrhagic anterior enteritis in horses?
Clostridioides difficile
32
Cause of multifocal ulceration and thickening of pyloric or esophageal mucosa in dog
Pythiosis
33
Coccidiosis causes based on GI location in chickens
E. acervulina- duodenum E. necatrix- jejunum E. tenella- ceca
34
Pathogenesis of Salmon poisoning; gross lesions; key histo
Salmon ate trematode (Nanophyetus salmincola) infected with Neorickettsia helminthoeca; hemorrhage and necrosis in duodenum of dogs, abdominal lymphadenopathy; Elementary bodies in macrophages
35
Cause of duodenal perforation in foals? Mechanism?
Parascaris equorum (linear foreign body)
36
What plant is associated with mesenteric volvulus in ruminants?
Lucerne (clover)
37
Cause of brown gut in a dog? Pathogenesis?
Intestinal ceroidosis (lipofuscinosis); Vitamin E deficient diet, chronic enteric or pancreatic disease (fat metabolism issues), lipofuscin/ceroid accumulates in tunica muscularis
38
If theres a red gut in a dog or cat, it's ________. In ruminants?
Parvo. Clostridium perfringens
39
Differentials for Peyer's patch necrosis in cattle?
Pestivirus, Salmonella, Rinderpest
40
Differentials for fluid diarrhea in a piglet with okay looking intestines
Rotavirus TGE- alphacoronavirus
41
Differentials for fluid diarrhea in mouse?
Epizootic diarrhea of infant mice (Type B Rotavirus) Mouse hepatitis virus aka Lethal Intestinal Virus Infant Mice (Betacoronavirus)
42
What causes a sad greasy mouse with diarrhea? Associated lesions?
Mouse reovirus 3; Enteritis, myocarditis, hepatitis, encephalitis
43
Constellation of gross lesions seen with West Nile (flavivirus)
Necrotizing enteritis, myocardial lesions, encephalitis
44
Red gut in baby farm animal is caused by
Clostridium perfringens type C (trypsin labile) Clostridium perfringens type A
45
Cause of necrotic or ulcerative enteritis is a quail
Clostridium colinum
46
Cause of ulcerative necrotic enteritis in a chicken
Clostridium perfringens type G (netb toxin)
47
Salmonella that causes fibrinonecrotic enteritis (non-host adapted)
Salmonella enterica subsp. typhimurium; endotoxin causes thrombosis
48
Host adapted Salmonella in cattle? pig? gross lesion in colon of pig?
Salmonella enterica dublin; cholerasuis or typhisuis; button ulcers in colon
49
Cause of fibrinonecrotic enteritis in NHPs
Yersinia enterocolitica or pseudotuberculosis
50
Cause of visible white villi on surface of avian enteric mucosa
Mycobacterium avium
51
Cause of enteric necrosis in emus
Erysipelothrix rhusiopathiae
52
Differentials for snake with fibrinonecrotic enteritis
Entamoeba invadens Salmonella
53
Differentials for granulomatous enteritis in a dog
Histoplasma capsulatum Blastomyces dermatitidis Pythium Mycobacterium
54
Cause of brooder patches in sheep? goats?
Sheep- Eimeria ovinoidalis Goats- Eimeria christiansini
55
Parasitic cause of hemorrhagic and necrotizing enteritis in cattle?
Eimeria bovis
56
Cause of petechia on dog enteric mucosa
Ancylostoma caninum
57
Canine tapeworm
Dipylidium caninum
58
Canine large roundworms; cats?
Toxocara caninum; leonina
59
Name and life cycle of horse large strongyles
Strongylus vulgaris; larvae in mesenteric artery, adults in lumen
60
Nematode that causes nodules in serosa or submucosa of intestines
Oesophagostomum
61
Tapeworm associated with ill-thrift in sheep/goats
Moniezia expansa
62
Three appearances of Lawsonia intracellularis in swine; section of GI affected
Proliferative, Necrotizing, or Hemorrhagic; ileum
63
Appearance of Lawsonia in foals
Proliferative, catarrhal (no necrosis or hemorrhage like in the pig)
64
Most GI lymphoma in the cat is? Dogs? Horse? Cattle?
T cell; Epitheliotropic T cell; B cell; Abomasum- B cell
65
Cause of transmissible proliferative ileitis in mice
Citrobacter rodentium
66
Histologic features of feline eosinophilic sclerosing peritonitis
Eosinophils, collagen in herringbone pattern, splendore Hoeppli
67
Colonic lesions that look like tumors in macaques but are actually viral
Macaque cytomegalovirus- multifocal necrotic and neutrophilic colitis
68
Adult horse with mesenteric lymphadenopathy; in a foal?
Strep equi equi; Rhodococcus equi (pyogranulomas)
69
Lesion associated with Rhodococcus equi (other than lymph nodes)
Volcano lesions over peyer's patches
70
Cause of red, necrotic colon with fibrinonecrotic membrane in pig? How to differentiate from Lawsonia?
Brachyspira hyodysenteriae or hampsonii; Lawsonia is in the ileum
71
Cause of severe necrotizing typhlocolitis in ratites (not just emus)
Brachyspira hyodysenteriae
72
If macaque with very discrete areas of necrosis in colon, what is it? Appearance in rabbit?
Peyer's patches- Yersinia; fibrinonecrotic colitis with angry lymphoid tissue, will be large colonies of bacteria
73
Edema of the mesocolon in a neonatal pig is caused by
Clostridioides difficile**
74
Antibiotics predispose hindgut fermenters to
Clostridioides difficile
75
If a horse colon, guess ______________
Salmonella
76
How is ferret Lawsonia different from other species
Get proliferative COLITIS instead of ileitis
77
Small red parasites lining mucosa of colon
Cyathostomes
78
Agent responsible for necrotizing typhlitis and hepatic necrosis
Histomonas meleagridis, transmitted by heterakis gallinarum
79
Sequela of chronic colitis in cotton topped tamarins
Colonic adenocarcinoma
80
Sequelae of chronic colitis in macaques
Cicatrizing ulcers leading to strictures
81
What is a mass on the outside of the colon in a horse?
GIST
82
Cause of tumor-like smooth muscle proliferation in wall of cecum of pheasants
Heterakis isolonche
83
Filariid worms free in abdominal cavity of deer? horse? NWP? OWP?
Deer- Setaria yehi Horse- Setaria equi NWP- Dipetalonema OWP- Edensonfilaria malayensis
84
Big pale nodular spleen from a macaque
Pancreatic islet amyloidosis (IAPP amyloid)
85
Who gets pancreatic exocrine adenocarcinoma?
Cats
86
Reddish-pink pancreatic tumor
Islet cell tumors
87
Differentials for big pale liver
Amyloid Lipidosis Normal in calorie-restricted ferret
88
Which lobe of the liver gets torsion? Species?
Caudate lobe; rabbits
89
Nutmeg liver is associated with
Chronic passive congestion (Right sided heart failure, etc.)
90
What species get ductal plate malformations, as well as cysts in many other organs?
Hamsters
91
Viral vause of liver necrosis in immunosuppressed NHPs
Macacine herpesvirus 1
92
Viral hepatitis that kills all NWMs except squirrel monkeys
Saimiriine herpesvirus 1
93
Chicken liver with necrosis is caused by _____________; associated lesions
Inclusion body hepatitis (aviadenovirus); hydropericardium, pancreatic necrosis
94
Only lentivirus that affects the liver
Equine Infectious Anemia- get hemosiderosis
95

Gross Pathology (23 decks)

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