Dr. Steven Greenberg, associate professor of neurology at Harvard Medical School and director of the Hemorrhagic Stroke Research Program at Massachusetts General Hospital in Boston, talks with host Dr. Maurice Pickard about the somewhat unexpected finding of an increased frequency of cerebral microbleeds, and explains the potential impact of this discovery on cases of uncontrolled hypertension and cognitive changes. How might this complicate decisions to use antithrombotic therapy? Does this research add a new dimension to certain unexplained phenomena, such as lacunar infarcts or cerebral atrophy?