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A fecal impaction or an impacted bowel is a solid, immobile bulk of feces that can develop in the rectum as a result of chronic constipation [1] (a related term is fecal loading which refers to a large volume of stool in the rectum of any consistency). [2]
A human colon is considered abnormally enlarged if it has a diameter greater than 12 cm [3] in the cecum (it is usually less than 9 cm [4]), greater than 6.5 cm [3] in the rectosigmoid region and greater than 8 cm [3] for the ascending colon. The transverse colon is usually less than 6 cm in diameter. [4] A megacolon can be either acute or ...
The sigmoid colon is the part of the large intestine after the descending colon and before the rectum. The name sigmoid means S-shaped (see sigmoid; cf. sigmoid sinus). The walls of the sigmoid colon are muscular and contract to increase the pressure inside the colon, causing the stool to move into the rectum.
Kiwi, for example, is full of fiber and has been found to speed up digestion and increase stool weight, says Dr. Justin Field, assistant clinical professor of medicine in the division of ...
As part of the digestion process, or due to fluid intake, food is mixed with large amounts of water. Thus, digested food is essentially liquid prior to reaching the colon. The colon absorbs water, leaving the remaining material as a semisolid stool. If the colon is damaged or inflamed, however, absorption is inhibited, and watery stools result.
Ulcerative colitis mainly affects the function of the large bowel, and its incidence rate is three times greater than that of Crohn's disease. [19] In terms of clinical features, over 90 percent of patients exhibit constant diarrhea, rectal bleeding, softer stool, mucus in the stool, tenesmus, and abdominal pain. [19]
To screen the colon during a colonoscopy, it needs to be cleaned out first. “Many people are intimidated by the bowel preparation,” says Forman. “Although not perfect, it has gotten easier.
A large volume or high enema [50] can be given to cleanse as much of the colon as possible of feces, [51] [52] and the solution administered commonly contains castile soap which irritates the colon's lining resulting in increased urgency to defecate. [53] However, a low enema is generally useful only for stool in the rectum, not in the ...