225700 Mitochondrial disease with epilepsy	225703 Mitochondrial disease with peripheral neuropathy	2443 Mitochondrial oxidative phosphorylation disorder due to nuclear DNA anomalies	377794 group of disorders	68385 Neurometabolic disease	98666 Unclassified primitive or secondary maculopathy	98683 Syndrome with a symptomatic strabismus	98687 Supranuclear oculomotor palsy	98695 Mitochondrial disease with eye involvement
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506 Leigh syndrome

definition

Leigh syndrome or subacute necrotizing encephalomyelopathy is a progressive neurological disease defined by specific neuropathological features associating brainstem and basal ganglia lesions.