What is the shape of a saccular aneurysm?

A saccular aneurysm has a shape that resembles a pouch or sac that bulges out from the side of an artery. It is one of the most common types of aneurysms and typically occurs in arteries in the brain or large arteries elsewhere in the body, such as the aorta. Saccular aneurysms appear as localized outpouchings with distinct contours.