You will have a chest x-ray. You will be asked questions about your ability to perform daily activities (performance status evaluation). You will have an electrocardiogram (ECG -- a test that measures the electrical activity of the heart). You will have either a multiple gated acquisition scan (MUGA) or an echocardiogram to check your heart's health. Samples (1 1/2 teaspoons) of cerebrospinal fluid from your spine and brain will be collected to look for the presence of cancer cells. The spinal sample will be collected through a lumbar puncture (spinal tap). The other sample will be taken from your brain through an Ommaya Reservoir tap. Radioactive dye will be injected into the CSF to make sure the CSF flows freely throughout the spinal canal. This is called an Indium-111 DPTA or Technetium 99m-DPTA Flow Study.