ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Reversed organs. Frontal X-ray of a 17-year-old patient with situs inversus totalis ('completely inverted arrangement'). This inherited condition, also named situs transversus or situs inversus with dextrocardia, has all the internal organs in opposite positions to their normal ones. Here, the heart (light region, centre left) is seen on the right, a defect called dextrocardia ('right heart'). Although less than 1 in 10,000 people are born with this condition, most live a normal life without disability. This patient has just undergone an operation, hence stitches (loops at centre) and monitoring electrodes (top and bottom) are also seen.
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