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Figure 1: Non-contrast computed tomography (CT) head showed diffuse acute subarachnoid haemorrhage (a). Magnetic resonance angiography, volume rendering coronal image showed no aneurysm (b). 2D angiography was done after 2 weeks which showed an aneurysm in right ICA bifurcation aneurysm (red arrow). Incidental fenestration of right MCA was noted with early origin of temporopolar artery (c and d)

Figure 1: Non-contrast computed tomography (CT) head showed diffuse acute subarachnoid haemorrhage (a). Magnetic resonance angiography, volume rendering coronal image showed no aneurysm (b). 2D angiography was done after 2 weeks which showed an aneurysm in right ICA bifurcation aneurysm (red arrow). Incidental fenestration of right MCA was noted with early origin of temporopolar artery (c and d)