Abstract
Two cases with ruptured dissecting aneurysms of posterior circulation treated with intravascular stents were reported. In one case, a de novo vertebral dissecting aneurysm (DA), which developed over 11 years after proximal clip obliteration for contra-lateral vertebral DA, was treated with double sheeted stents. In another case, a basilar DA was treated with a stent and GDCs (Guglielmi detachable coils). Both cases were free of rebleeding after stent placement, and gained angiographical cure of the DA's preserving parent arteries in 6 and 3.5 months, respectively. Although a stent might change the hemodynamics of a DA and promote the restoration of arterial wall with endothelial lining, its efficacy in prevention of rebleeding in the acute stage is still uncertain. From our 2-case experiences, a combined treatment using a stent and GDCs is feasible for a DA with a localized and relatively large protrusion, whereas double sheeted stent placement might be useful for a DA without a localized protrusion.
