Abstract
Objective: Endovascular treatment for a very small aneurysm with a diameter less than 3 mm is challenging because of its technical difficulties and high complication rates. The smallest coil diameter available today is 1.0 mm, so we defined an aneurysm with a short axis of less than 1.0 mm and a long axis of less than 3.0 mm as “the ultra small aneurysm.” We present a case of ruptured ultra small aneurysm successfully embolized by a single Target nano coil (1.5 mm×3.0 cm) and discuss about the technical points of the embolization for the ultra small aneurysm.
Case: A 64-year-old woman presented with subarachnoid hemorrhage. Rupture site was an anterior communicating artery aneurysm with a long axis of 2.9 mm and a short axis of 1.0 mm. We performed coil embolization through the triple coaxial guiding system and used manually shaped microcatheter by hot air gun. A single Target nano coil was successfully inserted into the aneurysm from the microcatheter positioned just at the neck of the aneurysm, and the aneurysm was completely obliterated.
Conclusion: Target nano is a highly soft coil and useful for the embolization of a ultra small ruptured cerebral aneurysm.
