MRI - 3 days postbiopsy
- Compared to the preoperative MRI, the right deep parietal lobe mass is newly associated with multifocal acute to early subacute perilesional hemorrhage, increased surrounding expansile FLAIR hyperintensity, and a small region of diffusion restriction anterior to the enhancing mass
- Mass effect on adjacent brain parenchyma and right lateral ventricle has increased, with leftward midline shift of 1.2 cm
- Diffusion tensor imaging delineates white matter regions with reduced fractional anisotropy due to the enhancing mass, surrounding FLAIR abnormality (edema or infiltrative tumor), and/or the new region of diffusion restriction/cytotoxic edema anterior to the mass, including the posterior aspect of the expected path of the corticospinal tracts in the corona radiata and posterior limb of internal capsule.