Page created on October 8, 2018. Last updated on December 18, 2024 at 16:56
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
Causes:
- See macropreparation 29
Theory:
See macropreparation 29.
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.