41-year-old female with cystic lesion of the pituitary gland. A previously demonstrated cystic focus in the right pituitary gland has significantly decreased in size, although there is now a more conspicuous, noncystic, hypoenhancing component best visualized within the midline superior anterior pituitary lobe measuring 5 mm transverse x 3 mm craniocaudal x 4 mm AP. The pituitary gland is otherwise not particularly enlarged. The optic apparatus and cavernous sinuses are intact without involvement. There are unchanged mild punctate foci of high T2 signal in the visualized aspects of the cerebral white matter.
A previously demonstrated cystic focus in the right pituitary gland has significantly decreased in size, although there is now a more conspicuous, noncystic, hypoenhancing component best visualized within the midline superior anterior pituitary lobe measuring 5 mm transverse x 3 mm craniocaudal x 4 mm AP most likely representing a microadenoma