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19 Cards in this Set
- Front
- Back
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What is the only known causative agent for glioma?
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vinyl chloride
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What are causes of symptoms from intracranial tumors?
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• compression of brain by tumor and presence of associatd edema
• infiltration & destruction of brain parenchyma by tumor cells |
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What differentiates primary and metastastic tumor by their onset of symptoms?
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• primary brain tumors: slowly progressive
• metastatic tumors: more acute |
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What are generalized symptoms of CNS tumors?
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• headache (most common generalized symptom)
• changes in mood or personality • decrease in appetite • generalized or focal seizures • nausea • projectile vomiting |
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What are symptoms of a frontal lobe tumor?
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• gait disorder
• lack of spontaneity • progressive difficulty w/ concentration & memory • personality changes • urinary incontinence |
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What are symptoms of parietal lobe tumors?
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• hemianesthesia
• right lobe: spatial disorientataion or left homonymous hemianopia • left lobe: receptive aphasia or right homonymous hemianopia |
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What are symptoms of temporal lobe tumors?
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• auditory hallucinations
• complex partial seizures • quadrantanopia • personality changes • uncal herniation |
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What radiographic studies are used to evaluate brain tumors?
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• MRI (superior)
• CT w/ contrast |
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Why would you perform a cerebral angiography for a patient with a brain tumor?
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to evaluate tumor blood supply prior to resection
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When is surgery an option for brain tumors?
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• for primary tumors
• for patients w/ solitary brain metastasis |
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When should you not use surgery to treat a tumor?
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• no extensive resection with brain stem tumors
• not recommended for tumors in language or sensorimotor areas, basal ganglia, or corpus callosum • not recommended for CNS lymphoma |
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How do you medically treat increased ICP?
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• glucocorticoids (usually dexamethasone) for brain edema
• mannitol w/ dexamethasone: for life-threatening edema with signs of herniation |
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CNS lymphomas are most likely to occur in which lobe?
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deep in frontal lobe
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What percentage of AIDS patients have multiofcal lymphoma when diagnosed?
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100%
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What are common sources of intracranial metastasis?
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• lung (most common)
• breast • melanoma • kidney |
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What is the source of most extradural spinal cord tumors?
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metastasis
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What are some examples of extramedullary tumors?
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• schwannomas
• meningiomas |
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What are examples of intramedullary tumors?
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• ependymomas
• astrocytomas |
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What is the most common location of spinal cord tumors?
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thoracic area
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