A, Bilateral germinal matrix hemorrhage, larger on left than right,
has broken into dilated ventricles. B, Left-side germinal matrix hemorrhage
extends into left cerebral hemisphere almost to the cortex, exerting mass effect with shift of interhemispheric fissure from left to right.
Reason for increased absorption coefficients interhemispheric fissure
unclear. Several infants with this finding studied at autopsy had no
evidence of subarachnoid hemorrhage.