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Ovoid hyperdense lesion seen impacted within the anterior 3rd ventricle and its supraventricular recess. It obstructs the foramen of Monro bilaterally causing supratentorial hydrocephalus. A VP shunt seen in the right lateral ventricle causing over drainage as it appears collapsed. The left lateral ventricle remains dilated and the septum pellucidum is displaced toward the right lateral ventricular lumen.
No transependymal oedema, which favours incomplete obstruction.