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MALPOSITION OF THE ATTACHED PORTION OF THE FALX CEREBRI AND THE SUPERIOR SAGITTAL SINUS

AN INDICATOR OF SEVERE CEREBRAL MALDEVELOPMENT

GEORGE W. NIXON M.D. and CARL E. RAVIN M.D.

Malposition of the superior sagittal sinus and attached portion of the falx cerebri is a reliable indicator of a severe cerebral malformation which develops in the first trimester of fetal development. This malposition has been identified in approximately one-half of our patients with hydranencephaly, congenital porencephaly, absence of the corpus callosum with interhemispheric cyst and congenital asymmetric cerebral hypoplasia.

Plain skull roentgenography usually demonstrates changes indicating the abnormal location of these structures.

Intracranial pneumography, cerebral angiography, isotope encephalography and transillumination are methods which can confirm displacement of these structures.


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