Axial CT scan without contrast demonstrates a large calcified suprasellar mass. Diagnosis: suprasellar aneurysm.

An axial T2 weighted MRI shows a large hypointense suprasellar mass with signal characteristics consistent with a large vascular structure. Diagnosis: suprasellar aneurysm.

The MR angiogram confirms a suprasellar aneurysm that appears to be originating from the anterior communicating artery. Diagnosis: suprasellar aneurysm.