Alimentary Path (1-6) Flashcards
name the oral cavity anomaly
shortening of the mandible and maxilla
brachygnathia
name the oral cavity anomaly
lengthening of the mandible and maxilla
prognathia
name the oral cavity anomaly
insufficient growth of palatine shelves;
midline defect of hard and/or soft palate
Palatoschisis (cleft palate)
name the oral cavity anomaly
abscence of segment of lip ventral to nasal septum
Cheiloschisis (hare lip)
this is inflammation of the mucosa lining the oral cavity
stomatitis
this is inflammation of the gingiva
gingivitis
this is inflammation of the tongue
glossitis
this is inflammation of the lips
chelitis
what cells do viral infections target to cause vesicular stomatitis
stratified squamous epithelial cells
what cells do autoimmune diseases target to cause vesicular stomatitis
mucocutaneous junctions
what cells does thermal injury affect to cause vesicular stomatitis
full thickness epithelial necrosis
name the 2 main viruses that cause ulcerative stomatitis
- feline calicivirus
- mucosal disease caused by BVDV
name the main viruse that causes necrotising stomatitis
calf diptheria (Fusobacterium necrophorum)
what are the two types of granulomatous stomatits?
- Actinobacillosis (wooden tongue)
- Actinomycosis (lumpy jaw)
name the type of granulomatous stomatitis
firm swelling of the tongue with fibrosis, yellow gritty foci, sinus tracts;
histologically with club colonies, gram negative bacillus
Actinobacillosis (wooden tongue)
name the type of granulomatous stomatitis
chronic osteomyelitis of mandible or maxilla, with club colonies, gram negative filamentous bacillus
Actinomycosis (lumpy jaw)
name the oral cavity neoplasia
benign epithelial tumor;
raised, folded or frond-like lesions on the lips and oral mucosa;
thick squamous epithelium lining a fibrovascular stroma
papilloma
name the oral cavity neoplasia
malignant tumor of squamous epithelium;
locally invasive and may metastasize;
irregular cords and islands of squamous epithelium invading the stroma
squamous cell carcinoma (SCC)
name the oral cavity neoplasia
tumor of pigment-producing melanocytes; nearly always malignant in oral cavity; most common oral neoplasm in dogs
malignant melanoma
name the oral cavity neoplasia
malignant mesenchymal (fibroblastic) tumors; common in dogs
fibrosarcomas
name 2 causes of dental attrition
- age related wear
- accelerated wear
name 7 anomalies of tooth development
- agenesis
- supernumary teeth
- dentigerous cysts
- enamal hypoplasia
- tooth discoloration
- fluoride toxicosis
- malocclusion
name the degenerative/inflammatory condition of teeth
dental plaque (bacteria and fungi), mineralization (tartar or dental calculus), gingivitis, atrophy of periodontal ligament, loosening and loss of teeth, tooth root abscesses, alveolar osteomyelitis
periodontal disease
name 3 degenerative/inflammatory conditions of teeth
- periodontal disease
- feline external resorptive neck lesions
- infundibular impaction/caries
name the dental neoplasm
group of benign neoplasms of the periodontal ligament and gingiva;
firm lesions on gums around teeth;
dense collagenous and sometimes ossified tissue lined by stratified squamous epithelium which descends into stroma in cords
Epulis (plural epulides)
name the dental neoplasm
may arise from rests of Malassez or Serres;
acanthomatous ameloblastoma (invasive)
odontogenic tumors
name the congenital anomaly of the oesophagus
rare failure of fusion of segments of the oesophagus; band of fibrous tissue where distal oesophagus should be
segmental aplasia
name the congenital anomaly of the oesophagus
failure of oesophageal cardiac sphincter to open
achalasia
this is a dilated oesophagus that lacks peristalsis and accumulates ingesta;
due to unerlying neuromuscular disorder or obstruction
megaoesophagus
name the type of megaoesophagus
occurs from developmental disorder of vagus nerve/motor nucleus
idiopathic megaoesophagus
name the type of megaoesophagus
occurs from dysautonomias, equine grass sickness, feline dysautonomia, myasthenia gravis
neurological acquired megaoesophagus
name the type of megaoesophagus
occurs from myodegeneration;
nutritional myopathy (vit E/selenium deficiency) in cattle
muscular acquired oesophagus
name the type of megaoesophagus
occurs from lead poisoning; swans ingesting lead shot
toxicity acquired megaoesophagus
name the type of oesophageal obstruction
foreign body at narrow sites (thoracic inlet, base of heart, cardiac sphincter);
may cause inflammation, pressure necrosis, ulceration and perforation
intraluminal obstruction
name the type of oesophageal obstruction
within the wall;
inflammatory lesion (abscess, granulation tissue), fibrosis or neoplasia
intramural obstruction
name the type of oesophageal obstruction
outside the wall;
vascular ring anomaly; persistent R aortic arch constrict oesophagus and leads to megaoesophagus cranially;
also pressure from abscess, hematoma, neoplasm
extrinsic obstruction
name the type of oesophagitis
damage from gastric acid due to gastro-oesophageal reflux or vomiting
reflux oesophagitis
name the oesophageal neoplasm
caused by bovine papillomavirus type 4 (in cattle);
may transform into squamous cell carcinomas with concurrent exposure to bracken fern toxins
papilloma
name the oesophageal neoplasm
espcially in cats;
concentric (“ring”) carcinomas of the oesophagus
squamous cell carcinoma
name the oesophageal neoplasm
benign tumor of oesophageal smooth muscle
leiomyoma
this is the failure of ruminants to expel fermentation gases
ruminal tympany (bloat)
name the type of bloat
formation of stable foam in rumen from ingestion of high-protein. lucerne/clover or high soncentrate/low roughage diets
primary (frothy bloat)
name the type of bloat
mechanical/functional obstruction of oesophagus (oesophageal disease/lesions) causing the inability to expel gas
secondary
this is caused from excess carbohydrates leading to an increased population of gram positive cocci leading to increased volatile fatty acid and lactic acid production leading to a reduced pH (<5)
(pathology of ruminant forestomachs)
ruminal acidosis (grain overload)
this is caused from the ingestion of sharp objects which can accumulate in the ventral reticulum;
may be forced through the wall of the reticulum by ruminoreticulum contractions
traumatic reticulitis
name the ruminant forestomach neoplasm
caused by bovine papillomavirus type 4
papilloma
name the ruminant forestomach neoplasm
develops from papillomas in cattle in association with ingested carcinogens in bracken fern
squamous cell carcinoma
name the type of gastric obstruction
foreign bodies (bones, stones, hair and wool balls, plant material)
physical obstruction
name the type of gastric obstruction
neurological causes including dysautonomia, end-stage liver disease, vagal indigestion
functional obstruction
name the type of gastric obstruction
delayed gastric emptying, persistent vomiting/regurgitation, acquired from healed ulcers (sometimes congenital hypertrophy)
pyloric stenosis
this is when the stomach is distended with gas (causing increased pressure on thoracic visera and blood vessels);
stomach rotates clockwise (when viewed ventral to dorsal) - spleen is included;
oesophagus is occluded and venous return in blocked
gastric dilation and volvulus (GDV)
this causes acute necrotising hemorrhagic abomasitis with emphysema of the abomasal wall
Clostridial diseases
this causes mucosal nodules (cobblestone or Morocco leather appearance), glandular hyperplasia, loss of parietal/chief cells, chronic inflammation in the abomasum
Ostertagiasis
name the glandular stomach neoplasm
most common gastric neoplasm in dogs and cats;
locally aggressive, lymphatic spread to gastric lymph nodes
adenocarcinoma
name the glandular stomach neoplasm
most common gastric neoplasm in horses;
arises from squamous mucosa
squamous cell carcinoma
name the glandular stomach neoplasm
arises from the interstitial cells of Cajal (dogs, cats)
Gastrointestinal stromal tumors
name the glandular stomach neoplasm
smooth muscle neoplasms forming nodular masses (mainly dogs)
leiomyoma / leiomyosarcoma
this means inflammation of the small intestine
enteritis
this means the passage of feces with increased bulk and/or fluid content
diarrhea
this means inflammation of large intestine / colon
colitis
this means inflammation of small and large intestine
enterocolitis
this means inflammation of duodenum
duodenitis
this means inflammation of jejunum
jejunitis
this means inflammation of ileum
ileitis
this means inflammation of caecum
typhlitis
this means inflammation of rectum
proctitis
this is inflammation of the stomach and small intestines, whether or not the colon is also involved
gastroenteritis
name the type of diarrhea
secretion exceeds absorption
secretory diarrhea
name the type of diarrhea
increased osmotic pressure due to unabsorbed digesta
malabsorptive diarrhea
what organism causes Johne’s disease?
Mycobacterium avium subspecies paratuberculosis
name the type of diarrhea
inflammation, increased vascular permeability, oedema, loss of integrity of mucosa, leaky intercellular junctions, erosion, ulceration (interstitial fluid moves into intestinal lumen)
exudative diarrhea
name 4 causes of exudative diarrhea
- Salmonellosis
- Clostridial enteritis
- Coccidiosis
- Cyathostomiasis
name the type of diarrhea
caused by propulsants - prokinetic agents, laxatives
hypermotility diarrhea
this is the excess loss of protein into intestinal lumen leading to hypoproteinemia (may occur with severe inflammatory disease, increased mucosal permeability, lymphangiectasia)
protein losing enteropathy (PLE)
this is the incomplete occlusion of the intestinal lumen
(congenital anomaly)
stenosis
this is the complete occlusion of the intestinal lumen
(congenital anomaly)
atresia
name the type of intestinal obstruction
food impaction or foreing bodies
intraluminal impaction
(physical obstruction)
name the type of intestinal obstruction
neoplasia (may cause annular stenosis); scar tissue, abscesses, granulomas
intramural obstruction
(physical obstruction)
name the type of intestinal obstruction
adhesions, neoplasia in structures adjacent to intestine, prostatic enlargement
extrinsic obstruction
(physical obstruction)
this is the displacement of intestine through a foramina; most are external
hernia
name the type of hernia
hernia contents are freely moveable (usually no adverse sequelae)
reducible
name the type of hernia
small intestine and contents trapped (non-reducible); obstruction of venous drainage, congestion, oedema, adhesons, obstruction of lumen, rupture, peritonitis, death
incarceration
this is the twisting of the intestine around its mesenteric axis
volvulus
this is the rotation of the intestine along its long axis
torsion
this is the telescoping of one segment of bowel into another
intussusception
intestinal hypoxia for this long can cause separation of epithelium from basement membrane
10-30 min
intestinal hypoxia for this long can cause destruction of villi
1-2 h
intestinal hypoxia for this long can cause necrosis of crypt cells
2 h
mucosa will be entirely necrotic this long after intestinal hypoxia
4-5 h
name the intestinal neoplasm
in small and large intestine;
usually grow into lumen, benign and polyp-like
intestinal adenoma/polyp
name the intestinal neoplasm
malignancy of intestinal epithelial cells; aggressive, spread via lymphatic vessels to lymph nodes, lungs or liver
intestinal adenocarcinoma
name the intestinal neoplasm
diffuse infiltration by neoplastic lymphocytes
lymphoma (lymphosarcoma)
name the intestinal neoplasm
interstitial cells of Cajal; needs to be differentiated from leiomyoma/leiomyosarcoma and fibroma/fibrosarcoma
Gastrointestinal stromal tumor
name the type of peritonitis
increased fluid in abdominal cavity, often with neutrophils (suppurative) or fibrin (fibrinous) adherent to serosal surfaces
acute peritonitis
name the type of peritonitis
fibrous adhesions on serosal surfaces, omentum, mesentery, peritoneum
chronic peritonitis
name 4 causes of peritonitis
- chemical
- bacterial
- viral
- parasitic
name the type of viral peritonitis
high-protein exudate in peritoneal cavity
wet (effusive) form
name the type of viral peritonitis
white miliary granulomas and fibrin on serosal surfaces;
infiltration by lymphocytes, plasma cells and macrophages
dry (non-effusive) form
name the peritoneum neoplasm
arise from serosa
mesotheliomas
name the peritoneum neoplasm
arise from mesentery;
can become large and pedunculates and may lead to strangulation of intestine
lipomas
name the peritoneum neoplasm
trancoelomic spread of ovarian carcinomas, bile duct carcinomas, pancreatic carcinomas, intestinal adenocarcinomas, gastric squamous cell carcinomas
secondary tumors
name the degenerative change in the liver
this is the first manifestation of cell injury, microscopic;
energy production decreases, membrane pumps fail from lack of ATP, intracellular water accumulates and hepatocytes swell;
reversible
hydropic degeneration (cloudy swelling)
name the degenerative change/accumulation in the liver
lipid accumulates in cytoplasm of injured hepatocytes (unable to metabolise/function normally);
reversible but may progress to irreversible
fatty change
name 3 gross features of fatty change in the liver
- pale yellow
- greasy
- friable
name the degenerative change/accumulation in the liver
hepatocytes distended by “feathery” cytoplasmic vacuoles which do NOT displace the nucelus;
excessive glycogen accumulation in presence of high levels of corticosteroids;
initially reversible
Steroid-induced hepatopathy
name the pattern of hepatocellular necrosis
necrosis of individual cells (some types of viral hepatitis)
single-cell necrosis
name the pattern of hepatocellular necrosis
randomly distributed without obvious relationship to lobular pattern (viral and bacterial agents most common)
focal to multifocal necrosis
name the pattern of hepatocellular necrosis
necrosis of whole lobules (not the whole liver), including cells and connective tissue scaffold
massive lobular necrosis
name 2 hepatocyte responses to hepatic damage
- hypertrophy of surviving hepatocytes
- hyperplasia of existing mature hepatocytes
this represents an abnormal proliferative response following hepatic damage in which hepatocytes fail to form well organized cords and lobules, and there is a lack of portal triads (portal areas)
nodular regeneration
this is a common incidental finding in older dogs;
discrete, unencapsulated nodules of hepatocytes which retain some lobular architecture, including portal areas (portal triads), with some organization of hepatocyte cords
nodular hyperplasia
this is diffuse, irreversible, end-stage hepatic disease;
combo of hepatocyte destruction, nodular regeneration, biliary hyperplasia, and bridging fibrosis with portal-centrilobular vascular anastomoses
cirrhosis
name the developmental condition of the liver
isolated or clustered cysts formed from bile ductules
congenital cysts (biliary cysts)
name the developmental condition of the liver
anomalous development of portal vein either prior to the liver (extrahepatic) or within the liver (intrahepatic);
features are liver and portal vein hypoplasia
porto-systemic shunts
name the acquired disturbance of hepatic circulation
dilation of groups of sinusoids filled with blood (incidental finding in cattle and cats)
telangiectasis
total rapid obstruction of this blood vessel results in death;
partial or slowly progressive occlusion leads to atrophy of lobe(s) of liver, depending on development of accessory portal circulation
portal vein
this is inflammation of the liver parenchyma
hepatitis
name at least 4 bacteria that cause hepatitis
- Salmonella spp.
- Escherichia coli
- Listeria monocytogenes
- Campylobacter fetus
- Mannheimia haemolytica
- Fusobacterium necrophorum
- Clostridium piliforme
- Clostridium novyi
- Leptospirosis
- Actinobacillosis
- Tuberculosis/mycobacteriosis
name 2 causes of viral hepatitis
- infectious canine hepatitis virus (canine adenovirus type 1)
- equine herpesvirus type 1
name 3 protozoal causes of hepatitis
- Toxoplasma gondii
- Leishmania spp.
- Eimeria stiedae
name a fungal cause of hepatitis
Aspergillus fumigatus
name a parasitic cause of hepatitis
acute fascioliasis (liver fluke)
name 3 acute toxic hepatopathies
- adverse drug reactions
- acute copper poisoning
- toxic blue-green algae
name the biliary disease
usually an ascending infection;
infiltrates of lymphocytes in portal tracts, together with bile duct proliferation and portal fibosis
cholangitis
this is inflammation of the biliary tree AND hepatocellular parenchyma
cholangiohepatitis
name the biliary disease
inflammation of gall bladder;
often ascending bacterial infection from the duodenum
cholecystitis
name the biliary disease
hyperplasia of the gall bladder wall and lining epithelium with mucin production;
may become severely distended and can rupture
cystic mucinous hyperplasia
name the biliary disease
gall stones;
uncommon in domestic animals but occur in dogs and cats and may be incidental finding in cattle
cholelithiasis
name 3 sequelae for acute pancreatic necrosis (“necrotising pancreatitis”)
- resolution
- chronic relapsing pancreatitis
- diabetes mellitus