Late thrombosis of middle cerebral artery following clipping and coating of aneurysms.

Twenty days after clipping and coating with Aron Alpha (ethylcyanoacrylate) of two adjacent middle cerebral artery aneurysms, the patient developed a complete thrombosis of the parent vessel at the site of the aneurysms. The routine postoperative angiograms on the seventh day after surgery had revealed a patent middle cerebral artery. The possible roles of Aron Alpha and multiple Heifetz clips are discussed.