Hi, Thanks for writing in. The findings are pointing towards a diagnosis of pituitary microadenoma which is a small tumor of pituitary origin and this might be causing the hyperprolactinoma aswell as visual field defect. This needs a detailed discussion with a neurosurgeon and a proper analysis of the type of visual field defect she is having. The tumor is very small and if there is significant pressure effefct due to the tumor, steps may be taken to remove it through a trans sphenoidal approach (through the roof of the nose). If there is no significant pressure effects then the patient may be kept under observation and repeat MRi may be done after 6 months to a year.