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Schizencephaly is a rare malformation in which symmetrical portions of the cerebral mantle fail to develop. It should be differentiated by angiography and pneumography from the porencephalies that follow destructive lesions and from the prognostically more favorable subdural hematomas and effusions. If the diagnosis of this anomaly can be firmly established short of surgical exploration, operation or further treatment of any kind is not, in the authors opinion, warranted.

✓ The authors describe the diagnostic value of transverse axial tomography in developmental lumbar stenosis, spondylosis, facetal hypertrophy, and other abnormalities that can constrict the spinal canal.

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