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Imaging Characteristics of Venous Parenchymal Abnormalities

Audrey Arnoux¹, Aude Triquenot-Bagan², Daniela Andriuta²

¹From the Department of Neurology and Laboratory of Functional Neurosciences and Pathology, Amiens University Medical Center and Jules Verne University of Picardie, France (A.A., D.A., C.L., O.G., J.-M.B.); Department of Neurology, Rouen University Medical Center, France (A.T.-B., D.W., E.G.-M., O.M.); and Department of Radiology, Amiens University Medical Center, France (M.C.-A.). arnoux.audrey@chu-amiens.fr.

|November 18, 2017

Abstract

Background And Purpose:

There are few published data on the patterns of parenchymal imaging abnormalities in a context of cerebral venous thrombosis (CVT). The objectives of the present study were to describe the patterns of parenchymal lesions associated with CVT and to determine the lesion sites.

Methods:

We included 44 consecutively hospitalized patients with CVT and parenchymal lesions on magnetic resonance imaging. The diagnosis of CVT had been confirmed by magnetic resonance imaging/magnetic resonance venography. Magnetic resonance imaging patterns for CVT were retrospectively analyzed with regard to the lesion's type, shape, and site.

Results:

The most frequent stroke subtype was hemorrhagic ischemia (in 56.8% of cases), followed by intracerebral hematoma (in 22.72% of cases) and nonhemorrhagic ischemia (in 20.45% of cases). Although there were no significant differences between these 3 groups with regard to the clinical and radiological characteristics, we observed a nonsignificant trend (P=0.08) toward a shorter time interval between hospital admission and magnetic resonance imaging for nonhemorrhagic stroke. The CVT parenchymal abnormalities were centered on 6 main foci and were related to the site of venous occlusion: (1) the inferior parietal lobule (n=20; 44.5%), associated mainly with occlusion of the transverse sinus (n=10) or pure cortical veins (n=10); (2) the inferior and posterior temporal regions (n=10; 22.75%), associated mainly with occlusion of the transverse sinus (n=9); (3) the parasagittal frontal region (n=6; 13.6%), associated mainly with occlusion of the superior sagittal sinus (n=4) or the transverse sinus (n=4); (4) the thalamus (n=5; 11.3%) associated with occlusion of the straight sinus (n=5); (5) the cerebellar hemisphere (n=2; 4.5%), associated in both cases with occlusion of the transverse sinus; and (6) the deep hemispheric regions (n=3; 6.8%), associated with occlusion of the superior sagittal sinus in all cases.

Conclusions:

Parenchymal lesions caused by CVT display specific anatomic patterns, which is mainly determined by the site of venous occlusion.

Keywords:

hemorrhage magnetic resonance imaging stroke superior sagittal sinus venous thrombosis

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