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60-year-old woman with aneurysm of the anterior communicating artery; hyperdensity in the region of the corpus callosum (CC) in non-contrast CT axial images corresponds to a haematoma (a, arrows). (b) Three-dimensional time-of-g0light MRI sequence showing aneurysm of the anterior communicating artery (arrow). (c) The tractography reconstruction demonstrating the rarefaction of the fibres of the CC associated with the lesion (arrows).
