Fig. 27-9. The large intestine shown by a barium enema. Note the different levels of the transverse colon. A shows the appendix. B shows the ileum and the pattern of the colon. C, Oblique view of the colon and rectum. D, The colon and rectum outlined by a double contrast enema. (A, Courtesy of Maurice C. Howard, M.D., Omaha, Nebraska. C, Courtesy of Robert A. Powers, M.D., Palo Alto, California. D, Courtesy of Eugene E. Ahern, M.D., Minneapolis, Minnesota. C and D are from Medical Radiography and Photography.) Click for high resolution image.