A large predominantly solid multilobulated mass measuring 3.6 x 3.8 x 4.1cm is centred in an expanded sella, with no separate pituitary gland identified. The mass is predominantly isointense to cerebral parenchyma on T1 and T2 weighted imaging and heterogenously contrast enhancing. No diffusion restriction. It extends into sphenoid and posterior ethmoid sinuses, and the suprasellar and interpeduncular cisterns, compressing and displacing superiorly the right aspect of the optic chiasm and surrounds the cavernous carotids within the cavernous sinuses without cavernous carotid narrowing. The soft tissue reaches the orbital apices without intraorbital invasion.
A 12mm T1 heterogeneously hyperintense, peripherally T2 hypointense component lies in the suprasellar cistern and just above the level of the tip of the basilar artery. The MRA examination demonstrates that the T1 hyperintense components is separate from the basilar tip.
No hydrocephalus although the floor of the 3rd ventricle is distorted.