A boy with mitochondrial cytopathy and neuropathological changes of subacute necrotizing
encephalopathy is reported. Conditions with abnormal mitochondria in muscle and/or
brain are reviewed and the role of mitochondrial abnormalities in spongiform encephalopathies
is discussed. It is suggested that electronmicroscopical and histochemical investigations
of muscle tissue would be of value in patients with Leigh's syndrome or other forms
of spongiform encephalopathies.
Mitochondrial cytopathy - Leigh's syndrome - Spongiform encephalopathy