Atypical left parietal meningioma status post resection, surveillance MRI. There are postoperative findings related to left parietal convexity meningioma resection with T1 hyperintense material with susceptibility effect in the surgical cavity, which are compatible with subacute blood products. There appears to be mild diffuse linear enhancement along the margins of the cavity. However, there is nodular enhancement in the adjacent portion of the superior sagittal sinus that measures up to 23 mm. There is a mixed intermediate and high T1 signal and mixed low and high T2 signal epidural collection at the surgical site that measures up to 22 mm in width. There is mild effacement of the left lateral ventricle, but no significant midline shift. There is no evidence of acute infarct.
1. Recent postoperative findings related to left parietal convexity meningioma resection with an acute to early subacute epidural hematoma at the surgical site that measures up to 22 mm in width, but no significant midline shift. 2. Findings suggestive of residual tumor involving the superior sagittal sinus.