Suprasellar aneurysm

Suprasellar aneurysm producing endocrine disturbance due to pituitary gland ¹⁾ or stalk compression.

Superior hypophyseal artery aneurysms:

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).