A Case of Heyde Syndrome with Resolution of Gastrointestinal Bleeding Two Weeks After Aortic Valve Replacement.

BACKGROUND Heyde syndrome is the association between gastrointestinal (GI) bleeding from arteriovenous malformation (AVM) and aortic stenosis. The aim of this study was to review Heyde syndrome and to discuss the management of this condition. CASE REPORT A 56-year-old female with a history of severe aortic stenosis and recurrent GI bleeding secondary to small bowel AVM, presented for hospital admission with melena and maroon blood in her stool.

Not your father's colonoscopy: a high-tech future for screening and surveillance of colorectal cancer.

The 20-year technology slump in endoscopic innovation is finally giving way to a flurry of technologies, of which many are directed specifically at improving or even replacing traditional colonoscopy. These technologies include "smart" overtubes, electronically mapped and driven instruments, and completely self-propelled devices. In addition to nonendoscopic technologies such as CT, these innovations may dramatically alter the practice of colorectal cancer screening, the "bread and butter" of gastroenterologists in this country.