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FIG 3. T1-weighted midsagittal view and T2-weighted axial view MR images show the cystic components of two large hamartomas with interpeduncular, prepontine extension.
A, In the first case, the cyst extends above the roof of the third ventricle and compresses the foramen of Monro on the right, resulting in dilation of the lateral ventricle (arrows).
B, In the second case, the cyst is within and extends below the third ventricle.
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