====== Suprasellar aneurysm ====== Suprasellar [[aneurysm]] producing endocrine disturbance due to [[pituitary gland]] ((White JC, Ballantine HT. Intrasellar Aneurysms Simulating Hypophyseal Tumors. J Neurosurg. 1961; 18:34–50)) or [[stalk]] compression. [[Superior hypophyseal artery aneurysm]]s: a) paraclinoid variant: usually does not produce visual symptoms b) suprasellar variant: when giant, may mimic [[pituitary tumor]] on CT. Suprasellar variant may actually grow to a size large enough to compress the pituitary stalk and cause [[hypopituitarism]] and “classic” chiasmal visual symptoms ([[Bitemporal hemianopsia]]).