#MICROSCOPIC

#Diagnosis 👉🏻 syncytial meningioma


#The_black_arrows
Whorls of cells

#MICROSCOPIC

#Diagnosis 👉🏻 Psammomatous meningioma


#The_black_arrow
Meningothelial cells

#The_red_arrows
Psammoma bodies

#MICROSCOPIC

#Diagnosis 👉🏻  Psammomatous meningioma

#MICROSCOPIC

#Diagnosis 👉🏻 transitional meningioma

#The_black_arrow
Psammoma body

#The_blue_arrows
Fibrous

#The_red_arrow
Syncytial

#MICROSCOPIC

#Diagnosis 👉🏻 microcystic meningioma

#The_blue_arrow
Blood vessels hyalinosis

#MICROSCOPIC

#Diagnosis 👉🏻 chordoid meningioma


#The_black_arrow
Myxoid background

#The_blue_arrows
Cell arranged in chords

#The_white_areas
Mitosis

#MICROSCOPIC

#Diagnosis 👉🏻 clear cell meningioma


#The_black_arrows
Blood vessels (chicken wire)

#The_blue_arrows
Blocky collagen

#MICROSCOPIC

#Diagnosis 👉🏻 Brian papillary meningioma

#The_black_arrows
Blood vessels

#The_red_arrow
Optically clear Nucleus

#MICROSCOPIC

#Diagnosis 👉🏻  Anaplastic meningioma


#The_black_arrow
Optically clear Nucleus

#The_red_arrows
Necrosis

#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
Grade 3 astrocytoma

- high hypercellularity
- mitosis ( black arrows)

#MICROSCOPIC

#Diagnosis 👉🏻 Grade 4 astrocytoma


#The_black_arrow
Necrosis

#The_Red_arrow
Angiogenesis ( new blood vessels formation)

#The_blue_arrow
Spindle cells

#The_features
- hyperchromatic nuclei
- plemorphism
- mitosis

- can be differentiated from meningioma by the absence of optically clear nuclei

#GROSS

#Diagnosis 👉🏻 Metastatic melanoma

#features
- multiple darkly pigmented metastases ( dark brown)

#MRI

#Diagnosis 👉🏻 Metastatic melanoma

#The_Red_arrow
Multiple cerebral mass

#MICROSCOPIC

#Diagnosis 👉🏻 Metastatic melanoma

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

#The_Red_arrows
Pigmentation (brown color)

#The_black_arrow
Normal brain tissue

#MICROSCOPIC

#Diagnosis 👉🏻 Metastatic breast carcinoma


#The_red_arrow
prominent nucleoli

#Features
- hyperchromatic nuclei
- plemorphism
- prominent nucleoli

THE LAB DONE  ✓✓

#DONE_BY Nawal Mahdi & Naji fadhel