lecture 4 exam 1 Flashcards
What is the difference between a description and the MDx?
Description is facts that can’t be contested
MDx is an interpretation of the facts
What is teh location of this lesion
in the hillus of the kidney
What is the distribution?
diffuse
What is the distribution
multifocal
Describe the distribution
multifocal
Describe the distribution
locally extensive
Describe the distribution
multi focal coalescing
Describe the distribution
diffuse
Describe the distribution
miliary
Describe the distribution and what does that indicate as a possible route of administration?
multifocal
possembolic or hematogenous route
Describe the distribution and what does that indicate as a possible route of administration?
locally extensive
local introduction via penetrating wound or anatomic pathway
Describe the distribution and what does that indicate as a possible route of administration?
asymetrical
(if symetrical then it would point to a metabolic/systemic route of administration)
Describe the shape and what does that indicate as a possible route of administration?
straight lines
the lesion is following an anatomic structure (blood vessel, bronchiole, nerve etc…)
Describe the shape and what does that indicate as a possible route of administration?
geometric
diamond/ circular
– the lesion involves vasculature
Describe the shape and what does that indicate as a possible route of administration?
Raised – something has been added (edema, blood, inflammatory cells, neoplastic/hyperplastic cells) • Depressed – something has been lost (necrosis) or the tissue has contracted (connective tissue)
What do the different colors tell you?
When referring to consistency of lesions if you can spread it with a knife what disease process does this allude to?
necrosis/exudate
When referring to consistency of lesions if you can’t spread it with a knife what does this allude to?
viable tissues or cells
gritty material
minerals
When referring to margins of a lesion a well demarcated what does that allude to?
that it is a different type of tissue
define infarct
local area where the blood supply has been cut off
A poorly demarcaated lesion or a lesion with similar lookingtissue to the adjacent organ alludes to what type of disease process
gradual infiltration/ poorly contained
Features of an Morphological Dx?
Describe the lesion in the heart of this cow
Diffusely pericardium/epicardium is thickened at least 5x its normal thickness is about 1cm white firm tissue on surface of the pericardium. Saggy villus-like/tag-like white fibrular to firm tissue
What is the morphological dx
Heart – pericarditis, suppurative, diffuse, chronic, severe
What is the cause of this lesion?
various bacteria
What is the disease name of this lesion
hardware disease
What is the cause of this lesion
poxvirus
What is the Etiologic dx?
poxviral dermatitis
Describe the lesion
Diffusely tricuspid valve thickened/nodular up to 8-10x normal thickness. Nodules up to 1 cm in size. Mottled red/tan. Friable soft rough shaggy surface
What is the MDx?
Heart – Valvular endocarditis, diffuse, chronic, severe
What is teh EDx
EtDx: Bacterial endocarditis
Define the lesion
Multifocal coalescing circular nodular, linear
True or false
EDx: Kidney – Nephritis, chronic, multifocal, severe
false
The MDx of this lesion in the mesentary of a horse’s small intestine is lipoma. What is the EDx of this neoplasm?
typically don’t need an EDx
This is an example of a lesion found in the thorax of a dog, what is the one word MDx?
hemothorax
defined as acute hemorrhage in the pleural cavity
What is the Mdx, Edx, and Disease name? Lesion in the liver of a cow
MDx: Liver – hepatic necrosis, focal, subacute, severe
EtDx: Clostridial hepatic necrosis
Disease name: Black disease
Lungs (of cow) – pulmonary melanosis, focal, mild
What type of Dx is this?
MDx
What is the Mdx of the lesions on this spleen?
lymphoid hyperplasia
