Endocrine Abstracts

Background: Over 90% of the blood supply to the adenohypophysis arises from hypothalamic portal vessels, in contrast to the systemic blood supply to the posterior lobe. A pre-existing, or tumour stimulated direct (non-portal) blood supply has been suggested as a possible pathogenic mechanism for prolactinoma development.Methods: 6 patients (3 microprolactinomas (mic), and 3 macroprolactinomas (mac)), and one control subject were imaged using a 3T magnet...