For each of the following patient descriptions, select the most likely intracranial neoplasm to cause the Þndings:
1. A 49-year-old man has had headaches for about a month. He suffers a grand mal seizure. The MRI scan shows four mass lesions ranging in size from 0.5 to 2.5 cm in size, all located at the grey-white junction in the right and left parietal lobes:
2. A 9-year-old girl has had persistent headaches for 6 weeks. She also exhibits difÞculty walking with ataxia. A CT scan demonstrates lateral ventricular enlargement along with a 3 cm circumscribed mass involving the vermis of the cerebellum. A lumbar puncture is performed. The CSF protein is elevated, with normal glucose, 3 lymphocytes, 1 neutrophil, and several large atypical cells:
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