PMC5228662_01
(A) Brain CT images at onset show the left cerebellar infarct and cerebellar herniation and T2-weighted brain MR images at 3 weeks after onset show a leukomalactic lesion in the left cerebellum. (B) Results of diffusion tensor tractography: narrowing of the upper portion (yellow arrows) of the lower ventral ascending reticular activating system is observed on both sides. In addition, partial tearing (green arrow) is observed in the middle portion of the right lower ventral ascending reticular activating system.
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F1
A 53-year-old male patient was diagnosed with a left cerebellar infarct, and underwent decompressive suboccipital craniectomy due to brain edema at 2 days after onset of a cerebellar infarct at the neurosurgery department of a university hospital (Fig. 1A). A leukomalactic lesion was observed in the left cerebellum on brain magnetic resonance imaging taken at 3 weeks after onset, however, no abnormal lesion was observed in the midbrain (Fig. 1A).