Pathology videos

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Empyema With Organized Granulation Tissue

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What is the definition of empyema? Why might the term organized granulation tissue be redundant? Why might empyema and granulation be oxymoronic? Demonstrate fibrin. Demonstrate neutrophils. Demonstrate...

Early Pneumonia

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Why might this be called the early stage of inflammation? Demonstrate at least two reasons why.

Diffuse Interstitial Fibrosis

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Show a thickened interstitium next to a more normal thickness interstitium? Is this a non-specific finding in many chronic lung disease states? Name some common things which this might be associated...

Bronchopneumonia

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5

What is the main differentiation between bronchopneumonia and lobar pneumonia? Where do broncho-pneumonias start? Why might this lung be heavier than normal? Why might there be fewer air bubbles when...

Lung - Acute Infarct - Septic

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Why are true infarcts of the lung uncommon even with pulmonary emboli? Why might this one be called septic? Can you see bacteria?[if] Why might this be called a hemorrhagic infarct (rather than anemic...

Central Passive Congestion And Centrilobular...

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Which part of the liver lobule becomes damaged first in oxygen/flow related injuries? (centrilobular or periportal) Which part of the liver lobule becomes damaged first in toxic related injuries? (centrilobular...

Liver - Cirrhosis 1

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What TWO features are ALWAYS needed to diagnose all types cirrhosis? Demonstrate each one.

Acute And Chronic Cholangitis

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Which parts of the cut sections of the liver show the inflammatory changes? What is the usual cause of cholangitis? Why might this be called acute and chronic from a histopathological point of view?...

Diffuse Cortical Necrosis

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Draw a line between the necrotic cortex and the more viable appearing medulla. On which side of that line can nuclei be discerned more easily? Why?

Acute Tubular Necrosis

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Show, in any way, shape, or form, a necrotic tubule. Name two or three most common causes of ATN.

Interstitial Nephritis

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What is the interstitium of the kidney? Why might the term thyroidization be described here as an adjective? Demonstrate it. Demonstrate a tubule with coagulation necrosis.

Diabetic Glomerulosclerosis

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Even if you didn't know anything at all about diabetes, and also had contempt for esoteric words like Kimmelsteil-Wilson, simply name some ways this kidney differs from all the normal kidneys you have...

Arteriolosclerosis (Hypertension) And Hydropic...

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Demonstrate tubules with hydropic change. What is hydropic change? Is hydropic change a NON-specific finding in many diseases?

Myocardial Infarction - Recent

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Demonstrate granulation tissue. What is granulation tissue? Can the term granulation tissue be used, more or less, interchangeably, with the term organizing inflammation?

Myocardial Infarct - Remote

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Draw a line separating the fibrosis (scar) from the normal cardiac muscle tissue. How might one differentiate scar (fibrosis), from coagulation necrosis, from normal cardiac muscle (in words)?

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