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Figure 1: (a) Head CT showing brain swelling with diffuse cortical hyperdensity of the left frontal lobe, suggestive of contrast agent leakage (arrow); a CT-angiography (b) showed stent patency (arrow). A complete radiological recovery was documented by a follow-up head CT scan performed after 10 days (c)

Figure 1: (a) Head CT showing brain swelling with diffuse cortical hyperdensity of the left frontal lobe, suggestive of contrast agent leakage (arrow); a CT-angiography (b) showed stent patency (arrow). A complete radiological recovery was documented by a follow-up head CT scan performed after 10 days (c)