Mesenteric angiography of non-tropical sprue.

Detailed angiographic findings in 2 cases of proved sprue are described. There are dilatation of the superior mesenteric artery and its small bowel branches selectively, and increased capillary blush. Early draining into dilated veins is also noted. These findings are similar to those of the superior mesenteric arteriogram performed with pharmacological vasodilators. This similarity suggests that the dilated vessels in non-tropical sprue may be due to capillary dilatation.