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A cystic lesion measuring 9 x 10 x 12 millimetres occupies the anterior part of the pituitary fossa, displacing the normal pituitary tissue posteriorly and somewhat to the left. It is of low signal intensity on T1, does not enhance, and is of high signal intensity on T2 and demonstrates a 2 to 3 mm hypointense nodule anteroinferiorly.
The optic chiasm may be just contacted in the midline by the dome of the cyst. There is no evidence of extension into the cavernous sinuses.
Scattered throughout the white matter of both cerebral hemispheres, particularly in the frontal lobes, are regions of high T2 signal, which are non-specific but most likely relate to chronic small vessel ischaemic change.