Lernkartei Clinical Neuroscience

Karten	28
Sprache	Deutsch
Kategorie	Medizin
Stufe	Universität
Erstellt / Aktualisiert	10.05.2014 / 31.05.2015
Lizenzierung	Keine Angabe
Weblink	https://card2brain.ch/box/clinical_neuroscience_brain_tumors
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Which is the major distinction of brain tumors?

Primary brain tumors --> arise from the brain

Secondary brain tumors --> metastases

Primary brain tumors --> metastases

Secondary brain tumors --> arise from the brain

Which are the most common metastases in brain tumors?

lung (40-50%)

breast (15-25%)

unknown primary tumor (11%)

skin / melanoma (5-20%)

prostate

Which is the most common pathway/location for spreading brain tumors?

lymphatic

direct spread

hematogenous (blood flow and vessels)

hemisphere (80%)

brain stem (5%) and cerebellum (15%)

What is the prognosis of metastasising brain tumor?

poor prognosis

What is true about primary brain tumors?

brain tumors make 2-8% out of all tumors

20% of all tumors in children

often Medulloblastoma

brain tumors make 4-15% out of all tumors

34% of all tumors in children

What is true about the etiology of brain tumors?

etiology is mostly sporadic

radiation (meningiomas and gliomas)

immunosupression (CNS lymphoma)

genetic factors/inheritable syndromes (NF1/2 and VHL)

chemicals

What defines a meningioma?

extra-axial brain tumor (located in meninges only)

arise from non-glial cells

caused by post-radiation

caused by genetic factors (NF2)

located in brain tissue

What defines a glioblastoma?

intra-axial brain tumor

astrocytomas arise from astrocytes

oligodendrogliomas arise from oligodendrocytes

ependymomas

meningioma

Clinical Neuroscience - Brain tumors