[Transient exacerbation of frozen gait by a border zone cerebellar infarction in a patient with vascular parkinsonism: a case report].

We report an 80-year-old man with vascular parkinsonism whose frozen gait was transiently worsened by a cerebellar infarction. Four months before his first admission, he was diagnosed with gastric and esophageal cancer at another hospital, where he had a partial remission by radiotherapy. Two weeks before admission, left hemiparesis due to a lacunar infarction appeared, and he was transferred to our hospital for rehabilitation.