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Figure 1: Case 1: A 53-year old lady presented with bitemporal field defect. (a) Plain; and, (b) Contrast-enhanced computed tomographic (CT) scan show the laminar pattern of contrast enhancement of the suprasellar aneurysm indicative of both an intact flow and partial thrombosis within its lumen; (c) Magnetic resonance angiography; and, (d) Three-dimensional CT angiogram show the giant right-sided superior hypophyseal artery aneurysm pointing towards the suprasellar cistern. (e) Antero-posterior; and, (f) Lateral right-sided internal carotid artery (ICA) angiogram shows a giant superior hypophyseal artery aneurysm. (g) Lateral image of left carotid angiogram does not show any filling of the aneurysm; (h) Left carotid angiogram with right-sided (ipsilateral to the side of aneurysm) compression shows a good cross-flow indicating that the right internal carotid artery (ICA) is filling through a patent anterior communicating artery from the left side

Figure 1: Case 1: A 53-year old lady presented with bitemporal field defect. (a) Plain; and, (b) Contrast-enhanced computed tomographic (CT) scan show the laminar pattern of contrast enhancement of the suprasellar aneurysm indicative of both an intact flow and partial thrombosis within its lumen; (c) Magnetic resonance angiography; and, (d) Three-dimensional CT angiogram show the giant right-sided superior hypophyseal artery aneurysm pointing towards the suprasellar cistern. (e) Antero-posterior; and, (f) Lateral right-sided internal carotid artery (ICA) angiogram shows a giant superior hypophyseal artery aneurysm. (g) Lateral image of left carotid angiogram does not show any filling of the aneurysm; (h) Left carotid angiogram with right-sided (ipsilateral to the side of aneurysm) compression shows a good cross-flow indicating that the right internal carotid artery (ICA) is filling through a patent anterior communicating artery from the left side