Fig. 3. Extensive thrombosis and thromboembolism in part controlled by tirofiban. This 64-year-old male patient (10) presented with an extensive subarachnoidal hemorrhage (Fisher IV) and suffered a severe rebleeding during transfer from an outside hospital (WFNS V). The bilobar aneurysm of the anterior communicating branch had broad-based contact to the parent vessel (A). Because of the poor clinical status, a surgical approach was excluded. During the interventional procedure, an occlusion of the left pericallosal artery was detected (B). Tirofiban and aspirin were administered; however, patency of the vessel was not restored after 30 minutes. After mechanical assistance with the use of a microwire and various microcatheters (C), the pericallosal artery was partially recanalized (D). However, the patient had focal deficits (mRS 4).