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We describe a case of myeloneuropathy resulting from nitrous oxide abuse. MR imaging of the spine revealed symmetric abnormal signal in the posterior columns of the cervical cord.Myeloneuropathy is caused by inactivation of vitamin B12 by nitrous oxide.This syndrome can also be seen in patients with borderline vitamin B12 deficiency who have recently been anesthetized with nitrous oxide. |
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anesthesia,general ataxia B 12 deficiency drug abuse drug abuse,inhalation drug abuse,neurologic complications of imbalance Lhermitte's sign MRI MRI,abnormal MRI,disappearing lesion on MRI,high signal foci on MRI,spinal cord MRI,spinal cord,increased intramedullary cord signal myeloneuropathy myelopathy neuropathy neuropathy,toxic neurotoxin nitrous oxide paresthesias polyneuropathy posterior column disease Romberg's sign spinal cord spinal cord,lesion of
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