|S||Suprasellar adenoma||aka pituitary adenoma; enhances on MR|
|A||Aneurysm||Pulsation artifact on MR|
|C||Craniopharyngioma||Arise from Rathke's cleft|
Papillary form, age 40s
Typically calcified and cystic
|Most common pituitary mets: breast, lung|
|Epidermis are DWI+|
MR characteristics as well as age can be used to narrow the differential, but those features are beyond the scope of this post... which is a fancy way of saying I am too lazy to look all them up right now, but hopefully will update this at a later time. Or just check out the references below.