Abstract Renewed interest in the use of oral barium for evaluating small bowel obstruction has resulted in more accurate delineation of the site and cause of the obstruction. The authors report 4 cases of small bowel intussusception studied roentgenographically with oral barium. The causes, symptoms, and consequences of intussusception, as well as the incidence and location of the lesions, are discussed. Roentgen signs, utilizing the oral approach, are re-emphasized, and comparison is made with the more common findings of intussusception demonstrated by barium enema study.
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