 There is an extra-axial mass in the left posterior frontal convexity that measures 5.2 x 4.5 cm in anteroposterior and transverse dimensions and 4.5 cm in craniocaudal dimension. The tumor infiltrates the overlying calvarium with associated hyperostosis. There is mass effect upon the left superior frontal gyrus and approximately 3 mm of midline shift to the right. There is infiltration of tumor into the superior sagittal sinus and compression of underlying cortical vein. This are areas of susceptibility effect within the mass related to calcifications and hemorrhage. In addition, there is susceptibility effect within adjacent sulci, which is suggestive of prior subarachnoid hemorrhage or superficial siderosis. There is no evidence of intraparenchymal edema or acute infarct. The ventricles are normal in size and configuration. However, there is a partially-empty sella. The adenoids are prominent and contain several retention cysts.
1. An extra-axial parasagittal mass that measures up to 5.2 cm along the left frontal convexity with invasion of the superior sagittal sinus and infiltration of the overlying calvarium likely represents a meningioma. 2. Susceptibility effect within left frontal lobe sulci is suggestive of prior subarachnoid hemorrhage or superficial siderosis associated with the tumor. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.