Brain Tumors Flashcards
can a benign tumor be malignant?
yes … location
tumors can spread through ________ to produce ___________ ______________.
CSF; carcinomatous meningitis
two groups affected with brain tumors
- 0-15 years
2. 50-70 years
what are the theories of causes of brain tumors?
- hereditary
- familial incidence by toxic or infectious exposure
- petrochemicals, organic solvents, rubber
- electromagnetic field exposure
- ionizing radiation, high dose
what are some common manifestations?
ICP triad, cerebellar s/s, bitemporal hemianopia, cognitive ability/speech/personality, dysfunction of motor tracts, sensory disturbances, s/s of increased ICP, and abnormal reflexes
what is the ICP triad?
HA, nausea/vomiting, and papilledema (optic disc edema) - swelling of the BVs in the back of the optic disk
what is the distribution of primary brain and CNS tumors in adults? (4)
- glioblastoma (50%)
- meningioma (17%)
- astrocytomas (10%)
- pituitary (4%)
- other (19%)
where are primary CNS neoplasms located?
originate within neural tissue
what are some examples of neuroglia tumors (gliomas) (4)
astrocytoma (glioblastoma), oligodendroglioma, ependyoma, and medulloblastoma
what are examples of neuron tumors? (2)
neuroblastoma and ganglioneuroblastoma
what are 4 examples of primary CNS neoplasms?
- neuroglia tumors
- neuron tumors
- pituitary adenomas
- meningioma (arachnoid cells)
where do secondary neoplasms originate from?
lungs, breast, skin, kidney, and GI tract
what kind of tumors are secondary neoplasms?
metastatic tumors (usually carcinomas)
how does one get diagnosed with a brain tumor?
clinical s/s, x-ray/CT scan/MRI, tissue biopsy, and laboratory findings
what is the medical and surgical management of brain tumors?
chemo, radiation, surgery, stereotactic radiosurgery, and combo of all
