Irregular cystic and solid mass in the pineal region and quadrigeminal plate extending into the third ventricle. It measures maximally 2.5 cm.
The solid component enhances postcontrast and demonstrates restricted diffusion. The mass also demonstrates some rim enhancement. Associated calcifications are better demonstrated on recent CT although are partially seen with susceptibility artifact on gradient-echo imaging.
There is concomitant moderate obstructive hydrocephalus with dilatation of the lateral and third ventricles.
Minor FLAIR hyperintensity along the superior aspect of the lateral ventricles suggests mild transependymal oedema.
Partial effacement of the suprasellar cistern, mass effect on the superior aspect of the cerebellum and slightly low-lying cerebellar tonsils. No significant effacement of the fourth ventricle.
The remainder of the brain parenchyma is unremarkable.
There is expected signal void in the major intracranial vessels indicative of their patency.