Abstract
The authors developed a liquid material, cellulose acetate polymer (CAP), for direct thrombosis of aneurysms. It is unlikely that any balloon or coil, regardless of its size or shape, perfectly matches the shape of an aneurysmal sac without leaving a remnant of the neck. CAP conforms to the contours of even irregularly shaped aneurysms. The authors report the treatment of two ruptured aneurysms with direct infusion of CAP in the acute stage.
