Diagnosis: Benign neoplasm of brainClinical question: preop MRI for tumor resectionSigns and Symptoms: Lump on Skull/ brain tumor There is a 45 x 51 mm axial dimension extra-axial axial mass adjacent to the falx and visually contiguous with the superior sagittal sinus which is suspected to invade the superior sagittal sinus. It is adjacent to the posterior aspect of the left frontal lobe which should displaces. There is associated involvement of the adjacent calvarium. There are signal voids present within this lesion.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.
1.There is an extra-axial parasagittal mass along the left frontal convexity which is suspected to invade the adjacent superior sagittal sinus and infiltrate into the the overlying calvarium. This most likely represents a meningioma. 2.Please note that this is a limited exam for the purpose of stereotactic guidance for surgery.