CASE REPORT LEO Stent Monotherapy for the Endovascular Reconstruction of Fusiform Aneurysms of the Middle Cerebral Artery

SUMMARY: We present the case of a patient with a fusiform aneurysm of the M1 segment of the middle cerebral artery (MCA) in which endovascular stent placement without coiling was performed. A 3.5-mm 25-mm LEO self-expanding stent was deployed along the fusiform aneurysm of the horizontal MCA M1 segment. Digital subtraction angiography showed progressive thrombosis at 6 months and complete thrombosis of the fusiform MCA aneurysm at 12 months. The introduction of the Guglielmi detachable coil in 19911-2radically changed the approach to intracranial aneurysms, and endovascular treatment became a frequent choice for many ruptured intracranial aneurysms. Recently, new techniques and materials have widened the range of aneurysms susceptible to endovascular treatment. However, the management of fusiform intracranial aneurysms remains controversial. We present the caseof a52-year-oldmanwitha fusiformaneurysmof themiddle cerebral artery (MCA), who was successfully treated with the placement of a Leo stent. To our knowledge, this is the first fusi-formMCA aneurysm successfully treated using the placement o