label: Extramedullary Disease in Multiple Myeloma Involving the Central Nervous System
label_lc: extramedullary disease in multiple myeloma involving the central nervous system
description: Multiple myeloma involving the central nervous system. It manifests with single or multiple intraparenchymal lesions and/or leptomeningeal involvement. Patients present with diffuse cerebral dysfunction and nerve paralysis. The prognosis is poor.