cns pathology labs
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32 Terms
g: purulent patches
m: focally dense inflammatory cellular infiltrate
tissue edema
acute pyogenic meningitis
acute pyogenic meningitis
acute pyogenic meningitis
brain abscess
swelling liquefied center filled with pus
brain abscess
in children and cerebellum
g: circumscribed
cystic mass
solid mural nodules
m: bipolar astrocytes
grade 1: pilocytic astrocytoma
g: ill defined
infiltrative
white growth
m: moderate cellularity
moderate atypia
fibrillary/ protoplasmic astrocytes
grade 2: low grade diffuse atrocytoma
g: infiltrative growth
m: high cellularity
mitotic activity
no necrosis
pleomorphic astrocytes
grade 3: anaplastic astrocytoma
g: infiltrative growth
large
hemorrhage
necrosis
cyst
m: high cellularity
marked cell anaplasia
palisading necrosis
vascular endothelial proliferation
grade 4: glioblastoma multiforme astrocytoma
grade 1: pilocytic astrocytoma
grade 1: pilocytic astrocytoma
grade 2: low grade diffuse atrocytoma
grade 2: low grade diffuse atrocytoma
grade 3: anaplastic astrocytoma
grade 3: anaplastic astrocytoma
grade 4: glioblastoma multiforme astrocytoma
grade 4: glioblastoma multiforme astrocytoma
intra axial
slow growing
dystrophic calcification
closely packed cells
fried agg appearance
oligodendroglioma
oligodendroglioma
intra axial
in 4th ventricle
childhood and adolescence
leads to hydrocephalus
m: grade 2 and 3
perivascular pseudorosettes
ependymal rosette
ependymoma
ependymoma
ependymoma
medulloblastoma
cerebellum and children
grade 4
highly malignant rapidly growing
subtle round cell
moderate pleomorphism
high mitotic count
homer wright rosettes
medulloblastoma
meningioma
psamomma bodies in meningioma
meningioma
concentric cell whorls
proliferated meningothelilal cells
oval cells indistinct cell borders
pale cytoplasm regular round nuclei
psamomma bodies
dystrophic calcification
meningioma
brain metastasis
tubule formation
well circumscribed and demarcated
hyperchromatasia
variation in nuclear size and shape
mitosis
brain metastasis
shwannoma
shwann cells
antoni A: spindle shaped elongated nuclei parallel bundles nuclei has palisade pattern
antoni B: larger ovoid haphazardly areanged microcytic stroma and myxomatous.
shwannoma