Detection and treatment of angiodysplasia.

Angiodysplasias of the colon are difficult to detect but usually easy to treat. Colonoscopy is the most sensitive and specific method for detection, but angiography, endoscopic ultrasound, and nuclear medicine techniques are also useful. Emerging optical analysis techniques, such as remote endoscopic digital spectroscopy and enhancement with opioid antagonists, may improve detection rates. Treatment is performed conventionally with contact probes. Other methods of treatment include lasers, injection therapy, angiographic techniques, rubber band ligation, hormonal therapy, and surgical resection.