What causes sigmoid volvulus in developing countries?

Updated: Jul 24, 2020
  • Author: Scott C Thornton, MD; Chief Editor: John Geibel, MD, MSc, DSc, AGAF  more...
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In developing countries, a high-fiber diet leads to overloading of the sigmoid colon, which twists around its mesentery and results in volvulus. Megacolon, either congenital or acquired through Chagas disease, predisposes to the development of sigmoid volvulus. In areas of South America where Chagas disease is endemic, the development of sigmoid volvulus in affected patients is reported to be as high as 30%.

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