From the case:
Intraventricular ganglioglioma
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A cystic lesion is demonstrated near the foramen of Monro, which is T1 hypointense and T2/FLAIR hyperintense, without significant enhancement nor diffusion restriction.
Case Discussion
Pathologically proven, a very rare tumor to be intraventricular, Intraventricular ganglioglioma.
A cystic lesion near the foremen of Monro of low SI on T1 and high SI on T2 and FLAIR images, without significant enhancement or diffusion restriction.