CNS Tumors Pathology

Question 1

grading of pilocytic astrocytoma

Answer 1

WHO grade 1

Question 2

where are pilocytic astrocytoma usually found

Answer 2

optic nerve, cerebellar hemisphere

Question 3

cystic, solid, GFAP positive, rosenthal fibers

Answer 3

pilocytic tumor

Question 4

mean survival of diffuse astrocytoma

Answer 4

6-8 years

Question 5

diffuse astrocytoma WHO grade ?

Answer 5

WHO Grade II

Question 6

gemistocytic, fibrillary, and r protoplastic

Answer 6

diffuse astrocytoma

Question 7

where are diffuse astromctyomas found often

Answer 7

temporal lobes

Question 8

which type of astrocytoma associated with seizures

Answer 8

diffuse astrocytoma

Question 9

anaplastic astrocytoma

Answer 9

WHO Grade III

Question 10

what is the mean survival of anaplastic astrocytoma

Answer 10

3 years

Question 11

morphology of astrocytes

Answer 11

dense, nuclear atypia, proliferation

Question 12

WHO grade IV

Answer 12

glioblastoma

Question 13

what is the MOST frequent brain tumor

Answer 13

glioblastoma

Question 14

hemispheric white matter, edema, necrosis, and widespread infiltration, nuclear pleomorphism, and pseudopalisades

Answer 14

glioblastoma

Question 15

how does astrocytoma spred

Answer 15

subarachnoid (drop metsastasis)

Question 16

higher grade astrocytoma

Answer 16

RB and P16/CDKnA

Question 17

what is treatent for astrocytomas

Answer 17

radiation therapy and chemotherapy such as temozolamide

Question 18

oligodendroglioma grade WHO

Answer 18

grade II

Question 19

anaplastic oligodendroglioma grade

Answer 19

grade III

Question 20

where are oligodendrogliomas ound

Answer 20

cerebral hemispheres

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Question 21

halos around tumor nuclei

Answer 21

oligodendroglioma