Gastrointestinal tract angiography in infants and children.

In the past 10 years since the development of newer imaging modalities, the method of evaluation of gastrointestinal diseases has changed to less invasive examinations. Angiography of the gastrointestinal tract and its accessory organs, which once was one of the primary procedures for hepatic tumors especially, is now considered nonessential except for occasional demonstration of vascular distribution prior to attempted surgery. As for gastrointestinal bleeding, although the incidence of ulcer disease is not as common in children as in adults, a child with bleeding who is at high risk for surgery will benefit occasionally from intra-arterial infusion of vasopression. As the major cause of gastrointestinal bleeding in children is from esophageal varices, though great anatomical detail of portal circulation can be seen in computed tomography and ultrasound, the coronal mapping of vascular anatomy of portal circulation is of utmost benefit prior to any attempt for surgery. Intra-arterial portography and splenoportography can be very helpful to delineate the anatomy and hemodynamics of portal hypertension, as well as for evaluation of suspected shunt thrombosis. Briefly, an update of information on digital subtraction angiography in gastrointestinal pathology will be given though the pediatric application has not been as popular as in adults.