26. Purulent meningitis: Difference between revisions
(Created page with "'''Staining''': HE '''Organ''': Brain + meninges '''Description''': Two types of tissue can be seen: eosinophilic brain parenchyme containing neurons and a basophilic exudate surrounding it. The exudate contains many neutrophils. Some places the exudate “infiltrates” into the parenchyme slightly. '''Diagnosis''': Purulent meningitis '''Theory''': While there are some places where the exudate appears to infiltrate into the brain parenchyme, it’s actually in t...") |
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'''Staining''': HE | [[File:Purulent meningitis - overview.jpg|thumb|Overview of the slide]]'''Staining''': HE | ||
'''Organ''': Brain + meninges | '''Organ''': Brain + meninges | ||
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While there are some places where the exudate appears to infiltrate into the brain parenchyme, it’s actually in the perivascular space and not inside the parenchyme. There is no inflammation of the brain, so no encephalitis. The inflammation is only of the meninges. | While there are some places where the exudate appears to infiltrate into the brain parenchyme, it’s actually in the perivascular space and not inside the parenchyme. There is no inflammation of the brain, so no encephalitis. The inflammation is only of the meninges. | ||
[[File:Purulent meningitis - | [[File:Purulent meningitis - close-up2.jpg|thumb|Here you can see some places where the pus ''looks like'' it’s infiltrating into the parenchyme.]] | ||
[[File:Purulent meningitis - close-up.jpg | [[File:Purulent meningitis - close-up.jpg|thumb|Close-up of the pus. Pus appears to be infiltrating into the parenchyme|left]] | ||
[[Category:Pathology 1 - Histopathology slides]] | [[Category:Pathology 1 - Histopathology slides]] | ||
Revision as of 11:57, 5 July 2024
Staining: HE
Organ: Brain + meninges
Description:
Two types of tissue can be seen: eosinophilic brain parenchyme containing neurons and a basophilic exudate surrounding it.
The exudate contains many neutrophils. Some places the exudate “infiltrates” into the parenchyme slightly.
Diagnosis: Purulent meningitis
Theory:
While there are some places where the exudate appears to infiltrate into the brain parenchyme, it’s actually in the perivascular space and not inside the parenchyme. There is no inflammation of the brain, so no encephalitis. The inflammation is only of the meninges.
