Right thalamus glioblastoma status post recent partial resection. There has been partial resection of the right thalamic mass via a right parietal approach. The residual tumor measures up to approximately 6 cm. There are blood products along the surgical tract and in the occipital horn of the right lateral ventricle, as well as within the right thalamic mass. There is a right parietal ventriculostomy catheter that traverses the right lateral ventricle and indents the anterior corpus callosum. There is perhaps a small amount of restricted diffusion related to ischemic tissue along the surgical approach, but no evidence of territorial infarction. There is also a small amount of linear enhancement along the surgical approach, which may represent granulation tissue. There is decreased dilatation of the right lateral ventricle, while the left lateral ventricle remains dilated and the third ventricle is partially effaced. The cortical swelling and high T2 signal in the inferior right parietal lobule has diminished. There is minimal extra-axial fluid underlying right parietal craniotomy flap and swelling and fluid in the overlying scalp. There is a maxillary retention cyst and sphenoethmoidal mucosal thickening. The orbits are unremarkable.
1.Interval partial resection of the large right thalamic glioblastoma with intratumor hemorrhage and a small amount of hemorrhage along the surgical path and ventricular system. The residual tumor measures up to approximately 6 cm.2.Decreased dilatation of the shunted right lateral ventricle.3.Decreased right parietal cortical edema, which may represent transient seizure-related effects.