ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Intussusception of the intestines. Coloured barium X-ray of a section through the abdomen of a 21-month-old child with acute intussusception of the intestines. Intussusception is a condition in which part of the intestines telescopes into an adjacent part. It causes abdominal pain, nausea and bleeding from the rectum, and the condition is fatal if not corrected. In most cases, introducing a barium enema (as here), a solution of barium salts that is opaque to X-rays, can both diagnose and treat the condition. However it can recur, and surgical correction is then required.
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