An additional enhancing mass was found at the foramen magnum, causing mass effect. Figure 2. T1 axial and coronal post-contrast MRI of the brain revealed broad-based, paraclinoid extra-axial ...

Brain MRI prior to stereotactic radiosurgery obtained on Nov. 15, 2017, demonstrated a well-circumscribed intra-axial enhancing mass in the left frontoparietal perirolandic region.