There is no hemorrhage or clear loss of grey-white. However, there are numerous calcification within the sulci of the left cerebral hemisphere. These are almost certainly in the arterial branches in both the PCA (@Key Finding 1) and MCA (@Key Finding 2) distribution (there are many more beyond the two highlighted here). These would be consistent with age-indeterminate calcified emboli. Atherosclerotic disease is unlikely given the strikingly unilateral nature of the findings. The combined PCA + MCA distribution should make one think of a left carotid source with fetal type PCA circulation.