Initial CT head demonstrates a shallow right parietal subgaleal haematoma. No associated skull fracture (bone windowing not provided). Contrecoup surface blood products in the left anterior cranial fossa / subdural space.
Additional finding of a mass in the right ventricular atrium. This is hyperdense to normal white and grey matter. Calcification along the posterior and superior margin suggestive of an expanded choroid plexus, with the normal plexus not seen separate from this lesion.