What tests are used to diagnose leptomeningeal carcinomatosis?

What tests are used to diagnose leptomeningeal carcinomatosis?

Leptomeningeal carcinomatosis affects the membrane that covers your brain and spinal cord. Healthcare providers might use the following tests to diagnose leptomeningeal carcinomatosis:

• Spinal tap. To perform a spinal tap (also called a lumbar puncture), your healthcare provider inserts a needle into your lower back to get a sample of cerebrospinal fluid. Cerebrospinal fluid is the clear liquid that surrounds your spine and brain.
• Magnetic resonance imaging (MRI). This test produces detailed images using a magnet, radio waves and a computer.