blood in stool

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blood in stool

The presence of visible or clinically detectable hemoglobin in feces. Bright red blood in stool is known as hematochezia. It may be produced by anorectal disorders, such as hemorrhoids, or by bleeding from diverticuli, cancers, some forms of dysentery, or angiodysplasia of the bowel (among other causes). It sometimes results from massive bleeding from the upper gastrointestinal tract.
hematochezia; hematemesis; melena
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Fogle: The Comprehensive Stool Analysis with Parasitology tests for the presence of red blood cells and occult blood in the stool, which can be connected to something as simple as hemorrhoids or as serious as cancer.
Some common symptoms include changes in bowel habits, changes in stool consistency, blood in the stool and abdominal discomfort.
"Any bleeding, whether it's blood in the urine, or blood in the stool, should be evaluated," Dr.
He said that when the stool appeared red, it indicated that there was blood in the stool which could be as a result of bleeding in the lower part of the intestine.
Some common manifestations of infectious colitis include acute onset of fever, nausea, cramps, or abdominal pain (extreme irritability or fussiness in infants), multiple diarrheal stools in a day, and in some cases, blood in the stool (Piccoli, 2012).
Screening options include annual fecal occult blood resting (FOBT), which checks for blood in the stool; sigmoidoscopy, which examines the large intestine from the rectum through the last part of the colon, every five years, plus FOBT at about three years; or colonoscopy every 10 years.
Polyps or tumours in the colon have blood vessels on their surface that can release a small amount of blood in the stool. Stool tests can prevent cancer by detecting polyps that can be removed before they become cancerous.
Invisible ("occult") blood in the stool is fairly common post-race, but this is also a symptom of colon cancer.
The phone calls also offered patients an in-home kit to detect blood in the stool. Within 6 months, more than 22% of people who received calls ordered and completed a stool card test, compared with only 16% of those who didn't receive the phone calls but may have been reminded of testing during a physician visit.
In the gastroenteritis survey, the presence of blood in the stool did not influence whether a person with gastroenteritis visited a doctor (odds ratio [OR] = 1.5, p = 0.55) but did influence whether a doctor ordered a stool test (OR = 9, p = 0.08).
If you see darker, more tar-like blood in the stool, it may be a sign of problems farther up the intestinal tract, such as stomach ulcers.
Blood in the stool. There are many benign causes of blood in the toilet bowl, such as piles, weakness in the colon, abnormal blood vessels that have a tendency to bleed, or even over wiping.