Olfactory groove meningioma status post subtotal resection on 2/17/15. Re-evaluation after stage II resection of olfactory groove meningioma on 2/25/15. The patient also experiences diplopia. There are postoperative findings related to recent bifrontal craniotomy with areas of susceptibility along the margins of the resection cavity and diffuse scalp and face swelling. There is nodule enhancement in the posterior aspect of the resection cavity, adjacent to the anterior cerebral arteries, that measures up to 20 mm and is compatible with represent residual tumor. There also appears to be nodular enhancement along the left planum sphenoidale that measures up to 10 mm and may represent residual tumor. Otherwise, there is diffuse linear enhancement along the margins of the resection cavity, which likely represent granulation tissue, as well as diffuse regional reactive dural enhancement. The left optic nerve abuts this dural enhancement proximal to the optic strut. The optic apparatus and orbits otherwise appear intact. There is extensive residual edema in the deformed bilateral frontal lobes. The ventricles are unchanged in size and configuration. There is no evidence of territorial infarction.
Postoperative findings related to olfactory groove meningioma resection with evidence of residual tumor in the posterior aspect of the resection cavity and perhaps along the left planum sphenoidale and extensive residual edema in the bilateral frontal lobes. 