A Case of Neurolymphomatosis Originated from Nasal Type CD56+ NK/T Cell Lymphoma

10~25% of all cases of lymphoma involves the nervous system. Neurolymphomatosis, one of the complications of lymphoma, is rare clinical disorder with signs of peripheral neuropathy. It is also a rare cause of painful neuropathy and usually presents with sensorimotor polyneuropathy in nerve conduction studies. We report a case of neurolymphomatosis that had originated from a nasal type NK/T cell lymphoma with clinical and electrophysiological evidences of peripheral neuropathy, confirmed by histopathologic evidences of lymphomatous infiltration.