The Cerebrovascular Complications Conference (3C) is a multidisciplinary annual meeting committed to a dynamic, honest, and open discussion of complications related to the microsurgical and endovascular management of complex cerebrovascular pathology. Using a case discussion format, the exchange of ideas among physicians, scientists, and other health care professionals will be facilitated and encouraged in a confidential environment. Through open dialogue, 3C hopes to enhance physician education, stimulate progress in the field of cerebrovascular surgery, and improve patient care.