Hyperlipidemia Resulting in Abnormal Density and Signal Intensity of Blood in a Neonate with Lipoprotein Lipase Deficiency

A, Axial noncontrast CT image shows decreased attenuation of the transverse sinuses. The density of the transverse sinuses is −15 HU. B, Reformatted midsagittal CT image demonstrates hypoattenuation in the superior sagittal sinus, internal cerebral veins, vein of Galen, straight sinus, and torcula. C, Sagittal T1-weighted (TR/TE, 500/12 ms; NEX, 4) image shows lack of normal signal void in the superior sagittal sinus. The anterior part of the superior sagittal sinus is hyperintense, and a fluid-fluid level (arrows) is present near the vertex. D, Axial T1-weighted (TR/TE, 500/12 ms; NEX, 4) image displays linear T1 shortening (arrows) in the anterior frontal white matter, corresponding to fat in the deep medullary veins.