Fig. 2

Brain magnetic resonance images of the patient at 58 years of age (spring 2015) (a) and 59 years of age (winter 2015) (b). a Putaminal atrophic change and low- and high-intensity signals of the lateral rim of the putamen were observed predominantly in the left putamen in the T2-weighted image (T2WI). However, T2WI did not show the hot-cross bun sign, which may reflect pontine atrophy. b As in the previous year, magnetic resonance imaging findings revealed putaminal atrophic change and both low- and high-intensity signals of the lateral rim of the bilateral putamen, again predominantly in the left putamen. There were slight atrophic changes in the cerebellum and brain stem