Legend Axial T2 images show a large suprasellar mass with a multiseptated cystic components and a hypointense perimeter. This mass displaces the temporal lobes and deforms the anterior border of the pons. The cystic components show high T2 signal with fluid-fluid levels seen dependently. Flow voids are visible in the carotid and basilar arteries.

Legend Axial, Coronal and Sagittal T1 images show a large mass extending from the sella to the suprasellar region. The multiseptated cysts contain predominately high T1 signal material. Low T1 signal tissue surrounds the cysts. This mass splays the cerebral peduncles and extends superiorly, left of the midline to compress the temporal lobes and left frontal lobe. There is no significant hydrocephalus. Flow voids are visible in both carotid arteries.

Legend Left: Coronal and sagittal post contrast T1 images show mild irregular enhancement along the periphery of this mass. Right: Axial post-contrast CT shows enhancement of the periphery of the mass with low density interior component. Rim calcifications are visible along the posterior and anterior borders of the mass. Key words: mri suprasellar tumor sella neoplasia pituitary hemorrhage

Brain Diagnosis: Hemorrhagic pituitary adenoma