PMC9053524_01
Brain CT on admission shows marked dilatation of the lateral ventricles and third ventricle. Note the calcification in the occipital lobe (A, arrow). The 3D CISS imaging-sequence demonstrates the aqueductal stenosis due to an intraluminal web (B, arrow).
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F1
Brain computed tomography (CT) showed dilatation of the supratentorial ventricles with signs of transependymal edema (Figure 1a). Brain MRI confirmed the acute triventricular hydrocephalus with aqueductal stenosis due to an intraluminal web (Figure 1b).
Brain MRI shows an intraventricular cyst with an eccentric nodule, representing the scolex (A, arrow). Note the diffusion restriction of the scolex (B, C, arrow). Following ventriculostomy the location of the floating cyst was slightly different (D, arrow).
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F2
A lobulated cystic lesion was seen in the occipital horn of the right lateral ventricle containing a small solid eccentric nodule with diffusion restriction (Figure 2a-c). The changed location of the intraventricular cyst on the postoperative MRI confirmed its free-floating character (Figure 2d).