BRAIN TUMORS Flashcards
What is a glioblastoma?
The most common tumor in adults is?
Glioblastoma
____________________ histologicall characteristic of glioblastoma and it means
Pseudopallisading
Cells line up at the edge of necrosis
Glioblastoma
_________________ are the second most common primary tumors in adults
Meningiomas
- Arise arachnoids cells
- Bening and do not metastasize
- Most common in women (express estrogen receptors)
- Prior radiation is a risk factor
Meningioma
Meningioma
——————- erd most common primary tumor in adults
Schwannomas
Shwannomas stain positive for ___________
S-100
2 characteristis of oligodendrogliomas:
- Frontal lob
- Fried egg appearance in pathology
Talk about pituitary adenoma
Pituitary adenoma
Name the 4 childhood tumors more common:
________________ most common brain tumor in children
Pilocytic astrocytoma
4 characteristics of pilocytic astrocytoma:
- Benign tx with surgery
- Posterior fossa
- Rosenthal fibers
- GFAP positive
_____________ stains pilocytic astrocytomas
GFAP
_____________ stains pilocytic astrocytomas
GFAP
Characteristics of medulloblastoma
- Malignant tumor in children
- Cerebellum (midline; truncal ataxia)
Unique characteristic of medulloblastoma in pathology
Characteristics of a ependimoma
- Often in 4th ventricle
Pathology characteristic of ependimoma is _______________
Pseudorosette
Craniopharyngiomas derive from ______________
Rathke pouch
What is the rathke pouch?
Pineal tumors derive from
___________
germ cells
Pineal tumor symptoms: