In the right parietal lobe is an ill-defined 24 x 16 x 17 mm mixed attenuation lesion, which has a low attenuation centre and a high attenuation rim, which appears thick walled. There is extensive surrounding oedema with some minor mass effect on the right lateral ventricle as well as some associated gyral oedema.
Elsewhere, there is involutional change in keeping with the patient's age of 81 years. No further localised grey or white matter lesion is seen. No surgically drainable collection.
Bones, air sinuses and orbits appear normal. No fracture of cranial base or vault. No scalp haematoma.
CONCLUSION:
Right parietal lesion is suspicious for a metastasis, including a haemorrhagic/radiodense metastasis such as a melanoma. Post contrast examination +/- MRI would provide more information.