**5.9 Conventional mesenteric angiography (CMA)**

CMA is rarely done in the evaluation of mid-GI bleeding unless there is ongoing significant bleeding and patient had hemodynamic instability, positive CTE, or bleeding scan; and embolization is considered to stop the bleeding. However, there is risk of bowel wall infarction following embolization therapy. CMA can also detect small bowel varices in patients with portal hypertension and Meckel's diverticulum by the finding of an anomalous long branch of superior mesenteric artery traversing the mesentery toward the right lower quadrant and supplying the diverticulum.
