leukemic leptomeningitis
(loo-KEE-mik MEH-nin-JY-tis)
A serious problem that may occur in leukemia. In leukemic leptomeningitis, cancer cells have spread from the original (primary) tumor to the meninges (thin layers of tissue that cover and protect the brain and spinal cord). The cancer may cause the meninges to be inflamed. Also called leukemic meningitis and meningeal leukemia.