Clinical question: History of grade 1 meningioma status post RT, surveillance MRI. Signs and symptoms: None Pre and post enhanced brain MRI:No diffusion-weighted abnormality.Examination demonstrates a dural base well-demarcated enhancing mass arising from the right leaf of tentorium with extension inferiorly into the posterior fossa and superiorly into right sub-temporal region consistent with patient's known meningioma. There is no detectable vasogenic edema of the right temporal or right cerebellum secondary to meningioma.The mass measures nearly identical to prior study. On sagittal reformatted images it measures 36 in AP and 28 mm in CC dimensions similar to prior exam. On axial post enhanced series measures approximately 36 x 27 mm in transaxial dimensions similar to prior exam.A second small left pterional meningioma is again identified measuring 12 mm in AP and 8 mm in transverse axis without significant change since prior study. This mass similar to prior exam is also seen minimal buckling of the adjacent cortex without FLAIR/T2 hyperintensity.Focus of FLAIR hyperintensity in the pons similar to prior exam and likely as result of treatment.Stable tiny focus of nonspecific FLAIR hyperintensity in the right frontal lobe. Unremarkable anatomical morphology and signal intensity of brain parenchyma otherwise on all MRI sequences and without detectable abnormal enhancement.
1.Stable size of a meningioma arising from the right leaf of tentorium with growth into the posterior fossa and right subtemporal region as detailed/measured above. Stable mass effect on the adjacent parenchyma without further hyperintensity/edema.2.Stable small left pterional meningioma since prior study as detail/measured.3.Stable focus of FLAIR hyperintensity in the pons likely treatment related since prior study.4.Stable and unremarkable exam otherwise.