Post operative status for 50 year old patient underwent ventricular shunting
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A large pre-pontine extra-axial SOL is seen related to the posterior aspect of the clivus and extends into the left cerbello-pontine angle. It is eliciting isointense signal to grey matter on both T1 and T2 sequences and demonstrates vivid contrast enhancement with enhancing meningeal dural base. In DWI and ADC images it show similar signal intensity to brain. It displaces the basilar artery and distorts the brain stem and results in compression of the fourth ventricle. The SOL is seen extending cranially to supra-sellar cistern. No bony invasion.
A ventricular shunt tube is noted with no supra-tentorial hydrocephalic changes.