Nipple discharge in a 31 yo female

Test Results

Results of appropriate testing return and show the following (SI units are in parentheses):

Serum:

Test (units) Result Results (SI Units)
Prolactin 500 µg/L 21740 pmol/L
TSH 2.1 microIU/ml 2.1 mIU/L

Urine pregnancy test: Negative

MRI brain with contrast: Slightly enlarged sella turcica, sellar mass measuring 1.1 cm x 1.6 cm x 2.1 cm, no optic chiasm compression, no hydrocephalus