[Muscular atrophy associated with a contralateral parietal lobe lesions. Apropos of 2 cases]

Two cases of parietal lobe tumours with contralateral muscle atrophy are discussed. Muscle biopsy demonstrated selective atrophy of Type II fibres. E.M.G. shows brief small polyphasic potentials. At autopsy in the second case no neurological lesion was found outside the brain, muscles and pyramidal tract.