<prompt> In a woman presenting with amenorrhea headache, blurred vision and galactorrhea appropriate investigation:Prolactin levelsLHFSHHCG  <response>: A women presenting with headache, blurred vision and galactorrhea raises of a pituitary prolactinoma and so appropriate investigation would be:S prolactin most importantTSH as patients with hypothyroidism have elevated TRH which acts to stimulate the release of prolactinX ray skull shows space occupying lesionMRIContrast enhanced CT 