#MICROSCOPIC

#Diagnosis 👉🏻  Cerebral infarct
After twelfth day

#MICROSCOPIC

#Diagnosis 👉🏻 Herbes encephalitis


#The_blue_arrows
Lymphocyte

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Microglia

#the_red_area
Microglia nodule

#MICROSCOPIC

#Diagnosis 👉🏻  Herpes encephalitis


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Perivascular cuffs of lymphocyte

#MICROSCOPIC

#Diagnosis 👉🏻  Herpes encephalitis


#The_bule_arrows
Perivascular cuffs of lymphocyte

#MICROSCOPIC

#Diagnosis 👉🏻 syncytial meningioma


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Whorls of cells

#MICROSCOPIC

#Diagnosis 👉🏻 Psammomatous meningioma


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Meningothelial cells

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Psammoma bodies

#MICROSCOPIC

#Diagnosis 👉🏻 transitional meningioma

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Psammoma body

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Fibrous

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Syncytial

#MICROSCOPIC

#Diagnosis 👉🏻 microcystic meningioma

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Blood vessels hyalinosis

#MICROSCOPIC

#Diagnosis 👉🏻 chordoid meningioma


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Myxoid background

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Cell arranged in chords

#The_white_areas
Mitosis

#MICROSCOPIC

#Diagnosis 👉🏻 clear cell meningioma


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Blood vessels (chicken wire)

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Blocky collagen

#MICROSCOPIC

#Diagnosis 👉🏻 pilocytic astrocytoma
grade 1

#The_features
- bipolar cells (have processes extending form both ends
- mild hypercellularity
- hairy-like

#MICROSCOPIC

#Diagnosis 👉🏻 diffuse astrocytoma
grade 2


#The_red_arrow
mitosis

#The_features
- moderate hypercellularity
- mitosis
- little plemorphism
- fibillary (the hair-like processes are grouped to form the fibillary appearance)

#MICROSCOPIC

#Diagnosis 👉🏻 Metastatic melanoma

#Features
- malignant
- multifocal
- hyperchromatic nuclei
- plemorphism
- mitosis

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Pigmentation (brown color)

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Normal brain tissue