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General Pathology
General Pathology final study set - UTCVM
102
Veterinary Medicine
Professional
12/08/2013

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Cards

Term
5 exogenous pigments
Definition
1-3. Pneumocosis (anthracosis, silicosis, asbestosis)
4. Tattoo ink
5. Carotenoids
Term
Rhodesian ridgebacks are prone to this genetic defect
Definition
DERMOID SINUSES or CYSTS (a homozygous dominant defect!) (sinuses connect)
Term
3 common sites of calcinosis circumscripta
Definition
Pressure points of joints
Tongue
Suture sites
Term
Breed predisposition of calcinosis circumscripta
Definition
Large breed dogs (esp German shepherds)
Term
4 sites of osseous metaplasia in dogs
Definition
1. lungs
2. dura of spinal cord
3. aging joints ("bone spurs")
4. wherever mineralization has occurred
Term
Gout
Definition
Deposition of uric acid or urates in tissue (especially in birds or reptiles)
Term
Gout is associated with what physiological condition?
Definition
Dehydration
Term
How is melanin made?
Definition
Tyrosine -> dopa -> melanin
Term
2 causes of hyperpigmentation
Definition
1) chronic dermatitis
2) keratoconjunctivitis (dry eye -> hyperpigmented cornea)
Term
Proper name for fat necrosis in cats
Definition
Feline pansteatitis
Term
Who is prone to malignant melanoma?
Definition
Grey horses!
Term
3 types of ACQUIRED insufficient melanin
Definition
1) copper deficiency
2) skin injury, like freezing
3) vitiligo
Term
White spots on the skin, growing in size and number, due to the unexplained death of melanocytes
Definition
Vitiligo
Term
Copper deficiency looks like this in cattle
Definition
"Light spectacles"
Term
3 lipid pigments
Definition
1) lipofuscin
2) ceroid
3) ceroid-lipofuscin
Term
6 hematogenous pigments
Definition
1. bruising
2. icterus or jaundice (bilirubin)
3. hemosiderosis
4. hemochromatosis
5. hemomelasma ilei
6. splenic capsular plaques
Term
Excess brown hematogenous pigment in an organ
Definition
hemosiderosis
Term
2 common sites of hemosiderosis
Definition
lung & spleen
Term
Excess brown hematogenous pigment in an organ, which damages tissue
Definition
Hemochromatosis
Term
2 causes of hemochromatosis
Definition
1. congenital excess of iron
2. dietary excess of iron
Term
Example of who gets hemochromatosis
Definition
captive toucans!
Term
This clinically insignificant pigmentation can be seen in the small intestine of horses - what is it, and what is deposited?
Definition
Hemomelasma ilei (caused by hemosiderin)
Term
This tissue is most susceptible to lysosomal storage diseases
Definition
neurons
Term
Brown granules of FAT breakdown that accumulate
Definition
lipofuscin
Term
On a cellular level, where do lipofuscins accumulate?
Definition
On either side of the nucleus (at least, that's what I know about lipofuscin in myocardial cells)
Term
Three tissue types that accumulate lipofuscin
Definition
Myocardium - long-lived!
Neurons - long-lived!
Hepatocytes - super active, especially if cats love fish
Term
Pigment in fat necrosis
Definition
ceroid
Term
Color of ceroid
Definition
Orange (think tuna-loving cats)
Term
What causes ceroid-lipofuscinosis?
Where is it seen?
Definition
Congenital disease
Especially seen in neurons
Term
What are porphyrins?
Definition
Red pigment
When exposed to UV light will release free radicals, causing tissue damage
Term
Photosensitization
Definition
In the context of pathology, this exclusively refers to an increase in circulating porphyrins!
Term
3 types of porphyria
Definition
Type I: ingestion of plants or drugs
Type II: congenital
Type III: hepatogenous
Term
Sign of congenital porphyria
Definition
Brown teeth that glow pink under a blacklight!
Term
4 problems with the eyes of collies
Definition
Collie eye anomaly:
1. Choroidal hypoplasia
2. Coloboma
3. Retinal detachment
4. Hemorrhage
Term
Components of splenic capsular plaques
Definition
Mineral + hemosiderin + collagen

** clinically insignificant!
Term
Absence or defect of some ocular tissue
Definition
COLOBOMA
Term
This dermal defect is found in Shar Peis
Definition
Cutaneous mucinosis
(excess mucin under the skin)
Term
Irish Water Spaniels get this
Definition
Follicular dysplasia
Term
Pathogenesis of AA amyloidosis
Definition
Chronic inflammation -> interleukin 6 -> an acute phase protein (SERUM AMYLOID A) is produced by the liver -> misfolds, recruits, aggregates -> excess misfolding SAA deposited in multiple possible organs -> compression of healthy cells
Term
What makes pancreatic islet amyloids?
Definition
Beta cells
Term
5 prion diseases
Definition
scrapie
bovine spongiform encephalopathy
feline spongiform encephalopathy
transmissible mink encephalopathy
chronic wasting disease (deer & elk)
Term
5 examples of dystrophic mineralization
Definition
1. dead parasites
2. center of some granulomas (eg. TB lung)
3. necrotic muscle (white muscle dz)
4. enzymatic fat digestion
5. pedunculated lipomas (horses)
Term
Dystrophic mineralization happens by these two means
Definition
Intracellular - mitochondria bind Ca
Extracellular - membrane phosphates bind Ca
Term
3 causes of hypercalcemia that predisposes an animal to metastatic mineralization
Definition
primary hyperparathyroidism
hypervitaminosis D (rodenticides, plant intestion, granulomatous dz, iatrogenic)
neoplasia
Term
4 sites of metastatic mineralization
Definition
lungs
gastric mucosa
renal tubular BM
vessel walls
Term
defect in cartilage growth that affects bone shape
Definition
chondrodysplasia
Term
what does chondrodysplasia predispose an animal to?
Definition
intervertebral disc disease (mineralization and herniation)
Term
cats that get chondrodysplasia
Definition
Scottish Folds
Term
Who is predisposed to carotenoid pigmentation?
Definition
Channel Island cattle
Term
closure of a normal opening in a tubular organ's development
Definition
atresia (eg GI, biliary, anus)
Term
metastases via blood vessels is characteristic of...
Definition
sarcomas

AKA "tumor emboli"
Term
what does silicosis lead to?
who is it common in?
Definition
pulmonary fibrosis
western horses
Term
these fibers are common in the lungs of smokers
Definition
asbestosis
Term
Yellow exogenous pigment
Definition
carotenoids
Term
What are carotenoids?
Definition
Fat-soluble pigments of plant origins, found in fat, adrenal cortex, and corpora lutea
Term
Local invasion is characteristic of this kind of neoplasia
Definition
sarcoma
Term
generalized skeletal development anomaly
Definition
arthrogryposis
Term
Normal tissue in an abnormal location
Definition
choristoma
Term
excess tissue in a normal location
Definition
hamartoma
Term
"inside-out calf"
Definition
schistosomus reflexus
Term
2 features of schistosomus reflexus
Definition
1. spinal inversion
2. hypoplastic lungs
Term
tissue types that are epithelial origins of neoplasias
Definition
skin, GI, uterus, bladder
pancreas, liver, adrenal
Term
3 characteristics of epithelial cell types
Definition
1. cohesive cell arrangement
2. intercellular bridges
3. glandular, secrete mucus
Term
These neoplasias often metastasize by lymphatics
Definition
carcinomas
Term
a mass composed of 2+ germ cell lineages
Definition
teratoma
(usually gonadal)
Term
fibrous CT response to invading neoplasa
Definition
desmoplasia
Term
"to grow backwards"
-lack of differentiation and arrangement
-may or not be neoplastic
Definition
anaplasia
Term
what is speculated to cause the high-stepping gait in show animals?
Definition
cerebellar abiotrophy
(=atrophy of the cerebellum)
Term
What Artemis has on his lips?
Definition
melanosis
Term
where do dogs and cats get AA amyloidosis?
Definition
Shar Peis & Abyssinians: renal medulla
old dogs: glomeruli
Term
3 non-dog/cat animals that get AA amyloidosis
Definition
cheetahs (is it CONTAGIOUS?)
cattle
waterfowl (in the joints)
Term
What causes uremic mineralization?
Definition
High PO4:Ca ratio & azotemia

**this happens when the kidneys STOP EXCRETING PHOSPHORUS
Term
what do Saler's cattle get?
Definition
beta-mannosidosis
Term
3 features of beta-mannosidosis
Definition
1. narrow palpebral fissure
2. cone-shaped head
3. head tremors
Term
what inborn error of metabolism are Westies prone to?
Definition
globoid cell leukodystrophy
Term
Who is prone to globoid cell leukodystrophy
Definition
West Highland White Terriers
Term
Musculoskeletal disease that Siamese cats are prone to
Definition
mucopolysaccharaidosis
Term
Who is prone to mucopolysaccharidosis?
Definition
Siamese cats
Term
The most common inborn error of metabolism
Definition
Mucopolysaccharidosis in Siamese cats!

11% of all Siamese have this to some degree!
Term
Mucopolysaccharidosis presents as this if mild
Definition
Degenerative joint disease of the shoulders and knees
Term
3 consequences of bovine muscular hypertrophy
Definition
Dystocia
Macroglossia
Heart failure
Term
What impedes the production of melanin?
Definition
Copper deficiency -> no tyrosinase activity
Term
2 sites of melanosis in cattle
Definition
esophagus
rostral meninges
Term
site of melanosis in sheep
Definition
aorta
Term
hemangioma
Definition
benign neoplasia of the endothelium
Term
atrophy
Definition
decrease in cell numbers and/or size after normal growth has been achieved
Term
Why does granulomatous disease produce a hypercalcemia?
Definition
Macrophages in granulomatous disease release vitamin D precursors. Vitamin D increases Ca via bone, kidney, and intestines.
Term
What kind of cancer is caused by UV radiation in non-human animals?
Definition
Squamous cell carcinoma
Term
pigment that makes horse fat yellow
Definition
carotenoid
Term
gene mutation in dwarfism
Definition
fibroblast growth factor 4
Term
Small spicules of bone in dog lungs represent what process?
Definition
Osseous metaplasia
Term
Pathogenesis of feline pansteatitis.
Definition
Cats eat lots of fish -> vitamin E deficiency -> breakdown of lipid -> ceroid
Term
What is white chalky material in the joints of reptiles?
Definition
GOUT
Term
What cells store lipofuscin?
Definition
Neurons, myocardium, hepatocytes
Term
Does a strangulating lipoma cause dystrophic or metastatic mineralization?
Definition
dystrophic - dead
Term
Bony plaques in the dura of the spinal cord of a dog
Definition
Osseous metaplasia
Term
3 locations of calcinosus circumscripta
Definition
1. tongue 2. surgery site 3. joints
Term
Name a cell injury lesions in a dog given excess glucocorticoids and its pathogenesis
Definition
Steroid hepatopathy - accumulation of glycogen in the liver
Term
Fibrin strands throughout the abdominal cavity indicate what?
Definition
acute peritonitis?
Term
Predisposed to choroidal hypoplasia
Definition
Collies!
Term
Why might colic produce DIC?
Definition
Colic -> release of gram negative organisms into bloodstream -> release of tissue factor from endothelial damage -> petechial hemorrhages, organ failure, and mixed clotting patterns
Term
Name an organ and give an example of hyperplasia, hypertrophy, atrophy, malignant neoplasia, hypoplasia, aplasia
Definition
Uterus!
Hyperplasia: Cystic endometrial hyperplasia
Hypertrophy: pregnancy
Atrophy: following an ovariectomy (lack of endocrine stimulation)
Malignant neoplasia: leimyosarcoma
Hypoplasia: congenital
Aplasia: segmental uterine horn aplasia
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