Left transcortical resection of interventricular mass, likely a meningioma. The images are degraded by patient motion. There are recent postoperative findings related to left transparietal resection of a mass in the trigone of the left lateral ventricle. There is a subcentimeter focus of enhancement in the left lateral ventricle along the posterior margin of the left thalamus. Otherwise, there are blood products within the left material ventricles and along the transcortical surgical approach. There are also small areas of restricted diffusion and high T2 signal in the splenium of the corpus callosum and high T2 signal without restricted diffusion along the margins of the surgical approach. Aside from residual prominence of the left lateral ventricle trigone, the ventricular system is not particularly enlarged. There is fluid and air in the subgaleal space overlying the left parietal craniotomy flap.
Recent postoperative findings related to left transparietal resection of a mass in the trigone of the left lateral ventricle, with what may represent a small amount of residual tumor along the posterior margin of the left thalamus, versus inflamed choroid plexus. Otherwise, a small amount of hemorrhage is present along the surgical approach and small areas of ischemic changes are apparent in the splenium of the corpus callosum.