PMC3805463_01
Preoperative MRI showed a tumor on the right base of the skull with growth into the prepontine cistern and sphenoidal sinus bilaterally. The tumor was also encaging the right ICA
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He was referred for a magnetic resonance imaging (MRI) examination, which showed a right-side contrast-enhancing meningeal skull base expansion with tumor growth into the prepontine cistern, sphenoidal sinus, and along the right ICA (Fig. 1).  
After complications during surgery an acute angiogram showed some contrast medium extravasation from the distal part of the C3 segment of the right ICA (arrow). Hemostasis was already achieved temporarily by surgical packing
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The angiogram showed some extravasation of the contrast medium, shaped as a small irregular pseudoaneurysm at the distal part of the C3 segment of the right ICA (Fig. 2).
A control angiogram showed the stentgraft in place and the leakage totally occluded
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With some manipulation a stentgraft (4.5/16 mm Jostent Graftmaster; Abbott Laboratories, Abbott Park, IL, USA) was placed and deployed with balloon dilatation, and the bleeding was immediately occluded (Fig. 3).
(a) A follow-up CT the next day showed the stentgraft in place and no further bleeding was seen. (b) The follow-up CT also confirmed the small right A1
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The patient recovered uneventfully and a computed tomography (CT) scan the following day showed an open stentgraft and no bleeding was seen (Fig. 4a). The CT also confirmed the small A1 (Fig. 4b) and the large PCOM on the right side, as well as a hypoplastic proximal segment of the right posterior cerebral artery (P1).