86 year old male with posttransplant lymphoproliferative disease involving the CNS. History of renal transplant in 2005 presented with PTLD involving the CNS and 2013. There are no diffusion weighted abnormalities. Redemonstrated are stable foci of FLAIR hyperintensity primarily within the periventricular white matter, most prominent involving the left frontal centrum semiovale and left cingulate gyrus with out evidence of mass effect. As before, there is a small focus of susceptibility near the vertex of the left-sided process. Mild ex vacuo dilatation of bilateral frontal horns of lateral ventricles (left slightly greater than right) is stable with maintained midline anatomy. Prominence of cortical sulci likely within normal range for patient's stated age and stable since prior exams. There are no detectable new foci of parenchymal signal abnormality. The signal voids of major intracranial arterial branches are identified.. The visualized paranasal sinuses and the mastoid air cells are clear
1.No evidence of acute or new findings since prior exams.2.Stable focus of hemorrhagic encephalomalacia in the left frontal centrum semiovale and left cingulate gyrus.3.Stable periventricular chronic small vessel ischemic disease.4.Stable mild ex vacuo dilatation of the lateral ventricles and prominence of cortical sulci