Alimentary 3 Flashcards
T/F: Atresia coli is a congenital anomaly.
True
What is the most common segmental anomaly of the intestine of domestic animals?
Atresia coli
What is intestinal stenosis?
Incomplete occlusion of the intestinal lumen.
What is intestinal atresia?
Complete occlusion/obliteration of the intestinal lumen.
What is atresia ani?
What is commonly seen with this condition?
- Imperforate anus.
- Megacolon
What is congenital colonic aganglionosis also known as?
What species is it found in?
- Lethal white syndrome
- Foals (horses)
What type of disorder is congenital colonic aganglionosis?
What breed is it most prevalent in?
- Autosomal recessive genetic disorder
- American Paint Horse
What is the fatal complication associated with congenital colonic aganglionosis?
Can’t excrete meconium due to the absence of myenteric and submucosal parasympathetic ganglia in the wall of the ileum, cecum and colon leading to intestinal immotility and colic.
What is an enterolith?
What species is it commonly found in?
- Composed of concentric lamellae of magnesium, ammonium phosphate (struvite) deposit around a foreign body such as a nail or wire.
- Horses
What is a trichobezoar?
What species can these be found in?
- Hairballs
- Cows, dogs, cats
What are phytobezoars/phytotrichobezoars?
Composed mainly of plant material impregnated with some phosphate salts that may be found in the colon of horses.
What type of parasitic problem can be found in foals?
Ascarid impaction
Rectal stricture can be seen in what species?
What is commonly the cause?
- Pigs
- Chronic salmonellosis caused by Salmonella typhimurium
What can also lead to stricture and stenosis within the GI tract?
Penetrating wounds
What is a hernia?
The protrusion of an organ or part of an organ/tissue through an abdominal opening.
What is an internal hernia?
Is this condition common or rare?
- Displacement of intestine through a normal or abnormal foramina within the abdominal cavity.
- Rare
What is an external hernia?
Displacement of loops of intestine, omentum and occasionally other viscera outside the abdominal cavity.
What is a hernial sac?
Pouch containing displaced contents.
What is a hernial ring?
Opening in abdominal wall which could be acquired or natural through which the hernial sac protrudes.
What does the term eventration refer to?
If displaced abdominal contents are not covered by parietal peritoneum or skin.
A diaphragmatic hernia is often seen secondary to what?
Trauma
Herniation of what two organs are more common?
Liver and loops of small intestine
Incarceration of a small piece of intestine with a scrotal hernia can lead to what?
Venous infarction, sepsis, death
In horses, herniation of small intestine can occur through what?
What type of hernia is this considered?
- Epiploic foramen
- Internal hernia
What can cause intestinal strangulation?
Pedunculated lipomas
What is an intestinal condition in horses that can result in severe colic?
Intussusception
What are some clinical signs of inflammation of the intestines?
Diarrhea leading to dehydration, acidosis, malabsorption, hypoproteinemia, electrolyte imbalance which can result in death.
Severe inflammatory disease causes loss of mucosal integrity, increasing mucosal permeability which may lead to what?
Fatal endotoxic shock
Endotoxins have a severe detrimental effect on what?
Cardiovascular function contributing to circulatory failure.
What virus causes bovine viral diarrhea?
Pestivirus
Peyer’s patch necrosis is diagnostic for what disease?
BVD
Cattle affected with the most severe form of BVD are in what age range?
6 months to 2 years.
Malignant catarrhal fever is caused by what virus?
Gamma herpesvirus (genus rhadinovirus)
What species are effected by malignant catarrhal fever?
A variety of ruminants including bison and cervids.
What form of malignant catarrhal fever do we have in the US?
Sheep-associated MCF
What histological signs of MCF can be found in several organs and tissues of an animal with MCF?
Fibrino-necrotizing vasculitis with prominent lymphocytic perivascular infiltrates.
This is a common cause of neonatal diarrhea in calves.
Can be seen with what other agents?
- Enteric coronaviral infections
- Rotavirus and Cryptosporidium
What is seen with transmissible gastro-enteritis?
In what species does this have a high mortality rate in the young?
- Severe villus atrophy and fusion.
- Pigs
Rotavirus causes what symptom in what age group?
Of what species?
- Diarrhea in young animals.
- Any species.
Rotavirus causes damage to what?
Resulting in what?
- Surface enterocytes
- Variable degrees of villous atrophy.
Subclinical infections of rotavirus are common in what species?
Piglets
What virus causes parvovirus enteritis in puppies?
Canine parvovirus 2
What virus causes parvovirus enteritis in cats?
Lesions are often found where?
- Feline panleukopenia virus
- In the bone marrow.
Sheep-associated MCF is caused by what virus?
Ovine herpesvirus 2
Where is a common place for ulcerative lesions to be found in cattle with MCF?
Oral cavity
Does TGEV have a low or high mortality rate?
High
T/F: Lesions produced by coronavirus are similar to those produced by rotavirus.
True
Parvovirus enteritis can cause what clinical signs?
Bloody diarrhea, dehydration
What virus can cause Peyer’s patch necrotizing lesions in dogs?
Parvovirus
With dogs, the main lesions seen with parvovirus are located where?
Intestines
With cats, the main lesions seen with parvovirus (feline panleukopenia) are located where?
Bone marrow
What does FIP stand for?
Feline infectious peritonitis
How many forms of FIP are there?
What are they called?
- 2
- Wet and dry form
Does FIP have a high mortality rate?
What age range is most susceptible?
- Yes
- Young, 1 year or less.
Fibrinous plaques on visceral organ surface is characteristic of what disease?
Where do the lesions tend to be located on the organs?
- FIP
- Following blood vessels
A ddx for the fibrinous plaques seen with FIP could be what?
Lymphosarcoma
Sheep-associated MCF is caused by what virus?
Ovine herpesvirus 2
Where is a common place for ulcerative lesions to be found in cattle with MCF?
Oral cavity
Does TGEV have a low or high mortality rate?
High
T/F: Lesions produced by coronavirus are similar to those produced by rotavirus.
True
Parvovirus enteritis can cause what clinical signs?
Bloody diarrhea, dehydration
What virus can cause Peyer’s patch necrotizing lesions in dogs?
Parvovirus
With dogs, the main lesions seen with parvovirus are located where?
Intestines
With cats, the main lesions seen with parvovirus (feline panleukopenia) are located where?
Bone marrow
What does FIP stand for?
Feline infectious peritonitis
How many forms of FIP are there?
What are they called?
- 2
- Wet and dry form
Does FIP have a high mortality rate?
What age range is most susceptible?
- Yes
- Young, 1 year or less.
Fibrinous plaques on visceral organ surface is characteristic of what disease?
Where do the lesions tend to be located on the organs?
- FIP
- Following blood vessels
A ddx for the fibrinous plaques seen with FIP could be what?
Lymphosarcoma