Redemonstration of a solid-cystic mass in the region of the pineal gland, which is not individualized from the lesion. The lesion measures approximately 2.3 x 1.7 x 1.7 cm, coming in close contact with the confluence of the bilateral internal cerebral veins. The solid component of the lesion follows cortical signal with faint and irregular post-contrast enhancement and restricted diffusion. The lesion blunts the posterior aspect of the third ventricle and extends through the aqueduct, causing obstruction and posterosuperior displacement of the tectal plate.
Moderate secondary dilatation of the ventricular system with mild periventricular transependymal flow. The fourth ventricle is of normal caliber. No significant effacement of the extra-axial CSF spaces.
No midline shift.
No evidence of leptomeningeal nodular enhancement.
No other intra or extra-axial focal lesion.