Twisted colon. Coloured X-ray of the abdomen of a patient with a twisted colon (large intestine), a condition known as sigmoidal volvulus. The twist is seen at lower centre. The sigmoid colon is at the end of the descending colon (purple/red, top right to lower right). It usually leads towards bottom centre to the rectum (not seen). Here it has twisted, displacing the end of the colon upwards to lower left. Such a volvulus can lead to partial or complete obstruction of the intestine and may reduce the blood supply to the intestine, causing tissue death. It may untwist spontaneously or when externally manipulated, but surgical treatment is usually required.
About the Artist -
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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