Large intraaxial mass lesion, measuring 3.5 x 2.5 x 2.5cm in perpendicular dimensions, it appears to be within the 3rd ventricle, obstructing the monro foramina bilaterally, causing severe bilateral obstructive hydrocephalus with transependymal oedema evident. The mass inferiorly displaces the floor of the third ventricle floor, hypothalamus and mammillary bodies and optic chiasm.
Irregular enhancement. There is no significant surrounding edema, with no significant diffusion restriction (>1200 x 10-6 mm2/s). Decreased NAA, increased Choline and CBV noted within the mass.
Right frontal ventricular drain in situ, traversing the left lateral ventricle with the tip appears within the left thalamus.