PMC5613268_01
(A) Axial T1-weighted image shows hypointense, lobulated contour lesion (arrow) within the confluens sinuum; (B) Axial T2-weighted image demonstrates lesion is hyperintense relative to brain parenchyma.
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F1
T1-weighted image (WI), hyperintense relative to the brain on T2-WI (Figure 1), with banded lower signal, most likely representing collagenous connective tissue and complete suppression on fluid-attenuated inversion recovery sequences. The lesion had caused a scallop-shaped area of erosion in the neighboring occipital bone (Figure 2).
Sagittal T2-weighted image indicates hyperintense lesion (arrow) extending from confluens sinuum through the superior sagittal sinus and scallop-shaped area of erosion in the neighboring bone.
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F2
T1-weighted image (WI), hyperintense relative to the brain on T2-WI (Figure 1), with banded lower signal, most likely representing collagenous connective tissue and complete suppression on fluid-attenuated inversion recovery sequences. The lesion had caused a scallop-shaped area of erosion in the neighboring occipital bone (Figure 2).
Sagittal magnetic resonance venography maximum intensity projection image revealing obvious venous flow, which divided into 2 channels around filling defect (arachnoid granulation), and joined distally.
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F3
It was observed that there was maintained venous flow around the lesion (Figure 3).