Clinical question: Preop study. Findings and symptoms: Preop imaging. Pre and post enhanced Stealth brain MRI:Examination is performed utilizing the stone protocol and is not a true diagnostic test.There are also no prior exams for comparison.Examination demonstrates a well-demarcated round extra-axial with T2 hypointense signal intensity and with diffuse enhancement in the left anterior and inferior frontal abutting the inner table of the skull as well as the falx. The mass measures maximum of 39 x 48 x 53 mm in size and consistent with a meningioma. There is surrounding vasogenic edema and constellation of findings results in significant mass effect on the left frontal horn of lateral ventricle and deviation of midline to the right of approximately 3 mm. This mass is inseparable from the very small caliber anterior aspect of superior sagittal sinus. Assessment for involvement of sinus cannot be made on this exam. Follow-up with dedicated imaging is recommended for further assessment if clinically desired.Ventricular system remains within normal size and the third ventricle is in midline. Cortical sulci and CSF spaces are unremarkable.
Extra-axial dural based left anterior/inferior frontal mass highly suggestive of a meningioma and measuring at 39 x 48 x 53 mm size.