Figure 3. Magnetic resonance imaging (MRI) of the brain 5 days after surgery. (A) Coronal and (B) sagittal post-contrast T1-sequence images demonstrating expected postoperative changes from trans-sphenoidal surgery and partial resection of the previously seen cystic and solid sellar and suprasellar mass. There is a residual enhancing tumor extending along the posterior margin of the resection cavity (A, B, white arrow) along the residual posterior sphenoid wall and right lateral margin. Along the right lateral margin, there is enhancing soft tissue that extends into the right cavernous sinus beyond the median carotid line with a small cleft fluid that tracks into the cavernous sinus (A, white star). Enhancing soft tissue extends to the level of the median carotid line on the left. There is a mass effect upon the optic chiasm which is displaced superiorly (A, blue arrow), and the infundibulum, which remains significantly deviated to the right.