Radiographic and Other Studies

1. Colonoscopy. The preferred study for significant rectal bleeding.

2. Abdominal x-ray. May provide useful information if pain or vomiting is present. Include supine and upright (or lateral decubitus) views to check for air fluid levels indicative of obstruction. Pneumoperitoneum or focal bowel wall thickening are indicative of colitis. A distorted bowel gas pattern may suggest a mass effect.

3. Air contrast or barium enema. Necessary in the evaluation and treatment of intussusception.

4. CT or MRI scan. Usually indicated for evaluation of a mass lesion or vascular lesion.

5. Angiography or scintigraphy. May be used to locate obscure sites of bleeding or Meckel diverticulum.

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