Dolichocolon, also known as redundant colon or tortuous colon, is the congenital presence of an abnormally-long large intestine. It should not be confused with an abnormally large intestine, which is called megacolon. The name originates from , and "colon".
Dolichocolon may predispose to abnormal rotation of the colon (volvulus) and its interposition between the diaphragm and the liver ( syndrome). The exact cause remains unknown. Dolichocolon is often an incidental finding on abdominal or in colonoscopy. It is not by itself a disease and as such requires no treatment if asymptomatic. In colonoscopies, dolichocolon can make progression of the endoscope very difficult, requiring external manipulation to reach the terminal ileum, and depending on the degree of dolichocolon, manipulation under general anesthesia may be preferred 2017 Aug;13(8):476–483. Approach to Incomplete Colonoscopy: New Techniques and Technologies Franco DL, Leighton JA, Gurudu SR (2017). Approach to Incomplete Colonoscopy: New Techniques and Technologies. Gastroenterol. Hepatol. (N Y), 2017-08, 13(8):476-483Watson RR (2021). Accessing a Difficult Colon. Gastroenterol. Hepatol. (N Y), 2021-02, 17(2):79–81
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