Sigmoid colon

Definition and stakes

Alcinous B. Jamison,  Intestinal Ills

“ The constriction is especially severe at the junction of the rectum with the sigmoid colon, where it flexes upon itself in the region where the bore of the rectum is less. The comparative shutting up of the caliber of the upper end of the rectum and lower portion of the sigmoid colon occasions undue retention of the feces and gases which accumulate, and in accumulating dislocate various portions of the large intestine, thus forming pouches, sacks, reservoirs, prolapse, etc., which hold the products of putrefaction as well as the irritating, poisonous mucus thrown out from the inflamed tissue. ”
Source: Gutenberg

Chas. A. Tyrrell,  The Royal Road to Health; Or, the Secret of Health Without Drugs

“ Their presence produces symptoms varying all the way from a little catarrhal irritation up to the most diverse, and in some instances serious, reflex disturbances. When the loculi only are filled, the main channel of the colon is undisturbed. The most common parts of the colon to become enlarged are the sigmoid flexure and the caecum (see diagram in beginning of book) , but accumulations may occur in any part of the colon. The ascending colon is much more often filled in life than the books would lead us to believe ”
Source: Gutenberg

Ming-gang Chen,  Assessment of morbidity due to Schistosoma japonicum infection in China…

“ In cases of intestinal cancer associated with schistosomiasis, the locality of the cancer was predominately seen in the rectum, as was also reported in Japan [64] , followed by the sigmoid colon, and finally in the other part of the colon, while cancer in the small intestine was a rarity which coincides with relative distribution of S. japonicum eggs in the intestine of man [44] , [58] , [65] - [66] . ”
Source: Wikisource

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