Preoperative planning for meningioma. There are postoperative findings related to posterior parafalcine meningioma resection. There is interval increase in size of a heterogeneously enhancing mass in the surgical bed along the bilateral aspects of the posterior falx cerebri with invasion of the superior sagittal sinus and extension into the overlying subgaleal space, which measures up to at least 6 cm. There is extensive vasogenic edema in the underlying brain parenchyma. There is unchanged patchy nonspecific scattered cerebral white matter T2 hyperintensity beyond the region of the surgical bed. There is no midline shift or herniation. There are bilateral lens implants. There are persistent secretions in the left frontal sinus.
Postoperative findings related to posterior parafalcine meningioma resection with interval increase in size of the tumor in the treatment bed and overlying subgaleal space, as well as extensive vasogenic edema in the adjacent brain parenchyma.