Legend Axial T2 (left) with a sagittal T1 image (right) demonstrate a large homogenous mass obliterating the foramen magnum and displacing the medulla anteriorly. The mass is intermediate in signal on both T1 and T2 images.

Legend Post gad sagittal (left), coronal (middle) and axial (right) scans reveal homogenous enhancement of the mass with a dural tail revealing its true extra axial extent. Also note the enlarged pituitary gland (left image). Key words: mri tumor neoplasia foramen magnum sella pituitary

Brain Diagnosis: Meningioma - Foramen magnum and pituitary adenoma