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Updated: Aug 29, 2025

3D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse
Published on: May 19, 2015
Unilateral subcortical extensive dilated perivascular spaces associated with superior sagittal sinus perivenous
Dimitri Renard1, Giovanni Castelnovo2, Marc Hackius2
1Department of Neurology, CHU de Nîmes, Hôpital Caremeau, Univ. Montpellier, 4 Rue du Pr Debré, Nîmes, 30900, France. dimitrirenard@hotmail.com.
Abstract:
We present the MRI of a 70-year-old patient showing unilateral subcortical extensive dilated perivascular spaces with surrounding fluid-attenuated inversion recovery hyperintensities associated with the presence of small cysts and tubular hypointensities in and near the superior sagittal sinus co-locating with draining cortical veins on gadolinium-enhanced T1-weighted imaging representing probably (dilated) spaces between pial sheath and cortical vein walls. These (peri)venous superior sagittal sinus cysts seem to represent either hydrops cause (by blocking interstitial fluid flow in perivenous subpial space, via meningeal lymphatics) or consequence (where cysts might have been formed due to subpial fluid flow obstruction by unknown cause).
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