Treatment of Endovascular Coil and Stent Migration Using the Merci Retriever: Report of Three Cases
Figure 2
(a) Noncontrast head CT demonstrates diffuse SAH. (b) A lateral view of the right ICA arteriogram reveals a wide-necked PCOM aneurysm. (c) Right ICA injection angiogram at the working angle demonstrates partial coil prolapse following initial stent-assisted coiling. (d) Attempts to place an overlapping stent to hold the prolapsed coil in place resulted in anterior migration of the stent and complete coil herniation. (e) and (f) Lateral roadmap angiograms demonstrate sequential retrieval of the stent and coil mass. (g) and (h) After complete removal of the migrated stent and coils, a repeated attempt at stent-assisted coiling of the ruptured aneurysm is successful. A working view of left ICA angiogram and plain X-ray demonstrate final placement of the stent and coil.
