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22. Fibrinous pericarditis – cor villosum: Difference between revisions

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22. Fibrinous pericarditis – cor villosum (view source)

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[[File:Fibrinous pericarditis - overview.jpg|thumb|Overview of the slide with the 5 layers.]]'''Staining''': HE
[[File:Fibrinous pericarditis - overview.jpg|thumb|Overview of the slide with the 5 layers.]]'''Staining''': HE '''Organ''': Heart
 
'''Organ''': Heart


'''Description''': The slide is from a cross-section of the heart. Five layers can be distinguished. From the bottom layer to the top layer:
'''Description''': The slide is from a cross-section of the heart. Five layers can be distinguished. From the bottom layer to the top layer:
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The fourth layer shows the ''early phase of organization'' after the pericarditis. This layer is where organization happens. It is paler than the fifth layer because this layer doesn’t contain just fibrin, but loose connective tissue as well, made by invading fibroblasts.
The fourth layer shows the ''early phase of organization'' after the pericarditis. This layer is where organization happens. It is paler than the fifth layer because this layer doesn’t contain just fibrin, but loose connective tissue as well, made by invading fibroblasts.


The third layer shows the ''late phase of organization''. In this layer, fibrosis has already started. The second and first layers are normal. The fibrous scar tissue forming in the pericardium can restrict the function of the myocardium.[[File:Fibrinous pericarditis - layer 4.jpg|thumb|Close-up of layer 4. You can see loose connective tissue and less fibrin. In the top left you can see a part of the fifth layer.|left]]
The third layer shows the ''late phase of organization''. In this layer, fibrosis has already started. The second and first layers are normal. The fibrous scar tissue forming in the pericardium can restrict the function of the myocardium.[[File:Fibrinous pericarditis - layer 4.jpg|thumb|Close-up of layer 4. You can see loose connective tissue and fibrin. In the top left you can see a part of the fifth layer.|left]]
[[File:Fibrinous pericarditis - layer 3.jpg|thumb|Close-up of layer 3. Fibrosis.]]
[[File:Fibrinous pericarditis - layer 3.jpg|thumb|Close-up of layer 3. Fibrosis.]]
[[Category:Pathology 1 - Histopathology slides]]
[[Category:Pathology 1 - Histopathology slides]]