Sagittal T2WI (Figure 7(a)
) and sagittal postgadolinium images (Figure 7(b)
) show a homogeneously enhancing T2 hyperintense dural-based lesion (green arrows) representing a meningioma, occupying the anterior aspect of foramen magnum. This lesion demonstrates a characteristic dural tail (blue arrow) on postgadolinium image. This lesion causes effacement of anterior subarachnoid space and exerts mass effect resulting in posterior displacement of the adjacent medulla and upper cervical spinal cord with impingement at the level of foramen magnum.