PMC9609807_01
(a) Axial FLAIR MRI showed a hyperintense lesion in the tectal plate (white arrow). (b) Sagittal T2-weighted MRI showed the same lesion with aqueductal stenosis (white arrow head) and ventricular dilation with ballooning of the floor of the third ventricle.
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F1
T2-weighted and fluid-attenuated inversion recovery (FLAIR) MRI revealed a hyperintense lesion in the tectal plate suggestive of a tectal glioma [Figure 1].
(a and b) First visit day, (c and d) 14 months later, (e and f) 19 months later, (g and h) 22months later (admission day). (a, c, e, g) Axial FLAIR MRI showed change of the size of ventricles. (b, d, f, h)Axial T2-weighted MRI showed CSF accumulation (white arrow).
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F2
CSF accumulation in the left sphenoid sinus and posterior ethmoid sinus. CSF pressure on admission was not high and there was no ventricular enlargement, but repeated ventricular enlargement and shrinkage had been observed over the past 2 years [Figure 2].
Postoperative magnetic resonance imaging (MRI). Axial T2-weighted MRI showed disappearance of cerebrospinal fluid leakage.
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F3
CSF leakage completely resolved after surgery [Figure 3].