Fig. 1

Computed tomography (a) scan demonstrates a round-shaped calcified lesion close to the midline in the sellar region and a diffuse SAH in the cistern magna and carotid cistern. Preoperative magnetic resonance images contrast enhanced with gadolinium showing the sagittal (b) and coronal (c) views, which indicate a tuberculum sellae and in close contact with the bilateral ICA. d and e show that the right side aneurysm has been pushed out and down by the tumor. The arrows in (d) and (e) are both point to the right ICA aneurysm