ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Abdominal air pockets. Coloured X-ray showing air in the abdomen, green masses, a condition known as pneumoperitoneum. The light bands in upper frame are the ribs, which encase the lungs (purple). The orange mass in the centre is the heart. The air pockets are trapped below the diaphragm. The most common causes of pneumoperitoneum are gas escaping from a perforated bowel and suction of air through the female genital tract. Pneumoperitoneum is treated by removal of the air and repair of the underlying problem.
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