Hypertensive putaminal hemorrhage presenting with hemichorea.

A progressive motor deficit primarily manifested by hemichorea developed in a 42-year-old hypertensive man. CT scan demonstrated contralateral putaminal hemorrhage. The patient's course was benign. Previous cases of acute hemichorea familiar to use and documented by CT scans have involved nonhemorrhagic lesions of either the putamen or caudate.