<prompt> A 40-year-old lady with temporal field defects and galactorrhoea is most likely to have -Pituitary macroadenomaCraniopharyngiomaLactational failurePregnancy  <response>: Temporal field defects in women with galactorrhoea suggests pituitary macroadenoma.Increased secretion of prolactin causes amenorrhoea, galactorrhoea and the mass effect of the tumour on the optic nerve produces headache and visual field defect. 