Illinois' Freshman Senator Mark Kirk is recovering from surgery after he suffered a stroke this weekend. Though he was not treated here at Columbia, Dr. E. Sander Connolly from the Cerebrovascular Center regularly sees patients in his condition and gave us some insight into the problem and its treatment...

Donna Ainsworth doesn't take anything for granted anymore. Not after surviving a Giant Aneurysm that first caused unbearable pain, then nearly blinded her in one eye, and finally almost killed her...

Moyamoya disease is a rare condition in which the walls of the carotid arteries thicken and the arteries narrow, restricting or blocking the blood flow to the brain. Moyamoya disease is progressive, which means that the vessels will continue to narrow over time, and affects mostly children and...

Dr. Quest began his career in general neurosurgery in 1976 upon completion of his residency at the Neurological Institute of New York, Columbia University.  His interests evolved into specialization in carotid artery surgery and cervical and lumbar spine disease. Over the years, Dr. Quest has...