This monograph is comprised of seven chapters, each of which discusses hydrocephalus, a chronic neurological condition caused by an abnormal accumulation of cerebrospinal fluid within cavities of the brain. Chapter One provides an overview of hydrocephalus and points out current limitations of understanding this condition. Chapter Two details treatment options for hydrocephalus, including the traditional use of surgery for placement of a shunt as well as more experimental methods. Chapter Three describes an alternate procedure for treating hydrocephalus, called endoscopic third...