PMC9975901_01
Radiological findings of Case 1. (A, B) Axial and coronal MRI, performed by the patient five months before the hospitalization, showing ventriculomegaly with features of NPH. (C, D) CT scan, performed at the time of neurological deterioration with negative COVID test, showing no substantial modifications of the ventricular system volume. The white arrows highlight the common features of NPH: Evans Index (A, C)>0.28; 0.31; callosal angle (B, D) < 100 .
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FIG1
He performed a brain MRI almost five months before the hospitalization, showing ventriculomegaly with NPH features (Figures 1A, 1B). A new CT scan showed no variations in the size of the ventricular system nor other evident causes of the clinical deterioration (Figures 1C, 1D).
PMC9975901_02
Radiological findings of Case 2 . (A, B) MRI performed at the hospital admission: the axial and coronal images show ventriculomegaly with enlargement of third ventricle (red asterisk) and reduction of callosal angle (78 , white arrow). (C) Head CT scan performed at the time of neurological impairment, with negative COVID-19 test: no volume alteration of the ventricular system.
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FIG2
Brain MRI showed dilated ventricles without CSF flow obstruction or space-occupying masses (Figures 2A, 2B). The new CT scan was substantially unchanged compared to the admission images (Figure 2C).