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Pathoma CNS - CNS Tumors Questions and Answers 100% Pass
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Pathoma CNS - CNS Tumors Questions and Answers 100% Pass
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Pathoma CNS - CNS Tumors Questions and Answers100% Pass
What does the imaging of meningioma reveal? Correct Ans-a round mass attached to the
dura
What does histology of meningioma show? Correct Ans-a whorled pattern; psammoma
bodies may be present
What is schwannoma? Correct Ans-Benign tumor of Schwann cells
What does schwannoma involve? Correct Ans-cranial or spinal nerves; within the cranium,
Within the cranium what does schwannoma most frequently involve? Correct Ans-cranial
nerve VIII at the cerebellopontine angle (presents as loss of hearing and tinnitus)
Schwannoma tumor cells are positive for what? Correct Ans-Tumor cells are S-100 positive
For Schwannoma, when are bilateral tumors seen? Correct Ans-in neurofibromatosis type
1
What is oligodendroglioma? Correct Ans-Malignant tumor of oligodendrocytes
, Pathoma CNS - CNS Tumors Questions and Answers
100% Pass
What does the imaging for oligodendroglioma reveal? Correct Ans-a calcified tumor in the
white matter, usually involving the frontal lobe;
Oligodendroglioma may present with what? Correct Ans-seizures
What is the appearance of oligodendroglioma on biopsy? Correct Ans-Fried-egg
appearance of cells on biopsy
What are the CNS tumors? Correct Ans-1) glioblastoma multiforme 2) meningioma 3)
schwannoma 4) oligodendroglioma 5) pilocytic astrocytoma 6) medulloblastoma 7)
ependymoma 8) craniopharyngioma 9)
Are CNS tumor metastatic? Correct Ans-Can be metastatic (50%) or primary (50%)
How do metastatic CNS tumors characteristically present? Correct Ans-as multiple, well-
circumscribed lesions at the gray-white junction.
What are the three most common sources that metastasize to the brain? Correct Ans-
Lung, breast, and kidney are common sources
How are primary tumor classified? Correct Ans-according to cell type of origin (e.g.,
astrocytes, meningothelial cells, ependymal cells, oligodendrocytes, or neuroectoderm)
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