Snapshot A 42-year-old man presents to the clinic with complaint of decreased libido for the past month. He finds that he has a new problem of difficulty obtaining and maintaining an erection during sexual activity with his partner. He does not recall any instance of trauma to the area. On physical examination, he is found to have significantly impaired peripheral vision bilaterally and the chest findings seen in the image. Introduction Overview login to view 2 more bullets Epidemiology Incidence login to view 1 more bullet Demographics login to view 2 more bullets Location login to view 2 more bullets ETIOLOGY Pathophysiology login to view 4 more bullets Presentation Symptoms login to view 14 more bullets Physical exam login to view 4 more bullets Imaging MRI or CT scan of the pituitary hypothalamic area login to view 2 more bullets Studies Serum prolactin levels login to view 1 more bullet Serum pregnancy test login to view 1 more bullet Serum TSH login to view 1 more bullet Serum testosterone levels login to view 1 more bullet Treatment Medical login to view 4 more bullets Surgical login to view 4 more bullets Complications Cranial nerve palsies due to mass effect Infertility