A rounded, vividly and homogenous enhancing mass in the superior left cerebellum with surrounding parenchymal hypoattenuation compatible with oedema, unchanged from the previous study. Local mass effect with effacement of the cerebellar folia, and partial effacement and displacement to the right of the fourth ventricle. Slight descent of the cerebellar tonsils through the foramen magnum (3 mm). The third and lateral ventricles remain of normal size with no evidence of obstructive hydrocephalus at this point in time. No other lesion is identified. No intra or extra-axial haemorrhage. The dural venous sinuses are patent.