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USMLE NEUROLOGY > BRAIN TUMORS > Flashcards

BRAIN TUMORS Flashcards

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USMLE® Step 1 flashcards
1
Q

What is a glioblastoma?

A
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2
Q

The most common tumor in adults is?

A

Glioblastoma

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3
Q

____________________ histologicall characteristic of glioblastoma and it means

A

Pseudopallisading

Cells line up at the edge of necrosis

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4
Q
A

Glioblastoma

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5
Q

_________________ are the second most common primary tumors in adults

A

Meningiomas

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6
Q
A
  1. Arise arachnoids cells
  2. Bening and do not metastasize
  3. Most common in women (express estrogen receptors)
  4. Prior radiation is a risk factor
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7
Q
A

Meningioma

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8
Q
A

Meningioma

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9
Q

——————- erd most common primary tumor in adults

A

Schwannomas

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10
Q
A
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11
Q

Shwannomas stain positive for ___________

A

S-100

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12
Q

2 characteristis of oligodendrogliomas:

A
  1. Frontal lob
  2. Fried egg appearance in pathology
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13
Q

Talk about pituitary adenoma

A
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14
Q
A

Pituitary adenoma

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15
Q

Name the 4 childhood tumors more common:

A
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16
Q

________________ most common brain tumor in children

A

Pilocytic astrocytoma

17
Q

4 characteristics of pilocytic astrocytoma:

A
  1. Benign tx with surgery
  2. Posterior fossa
  3. Rosenthal fibers
  4. GFAP positive
18
Q

_____________ stains pilocytic astrocytomas

A

GFAP

18
Q

_____________ stains pilocytic astrocytomas

A

GFAP

19
Q

Characteristics of medulloblastoma

A
  1. Malignant tumor in children
  2. Cerebellum (midline; truncal ataxia)
20
Q

Unique characteristic of medulloblastoma in pathology

A
21
Q

Characteristics of a ependimoma

A
  1. Often in 4th ventricle
22
Q

Pathology characteristic of ependimoma is _______________

A

Pseudorosette

23
Q

Craniopharyngiomas derive from ______________

A

Rathke pouch

24
Q

What is the rathke pouch?

A
25
Q
A
26
Q

Pineal tumors derive from
___________

A

germ cells

27
Q

Pineal tumor symptoms:

A

USMLE NEUROLOGY (4 decks)

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