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Rectal bleeding refers to bleeding in the rectum, thus a form of lower gastrointestinal bleeding. There are many causes of rectal hemorrhage, including inflamed hemorrhoids (which are dilated vessels in the perianal fat pads), rectal varices , proctitis (of various causes), stercoral ulcers , and infections .
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]
Fats in feces can be measured over a defined time (often five days). [14] Other tests include the (13)C-mixed triglycerides test and fecal elastase , to detect possible fat maldigestion due to exocrine pancreatic insufficiency , [ 14 ] or various specific tests to detect other causes of malabsorption such as celiac disease .
A lower gastrointestinal bleed is defined as bleeding originating distal to the ileocecal valve, which includes the colon, rectum, and anus. [2] LGIB was previously defined as any bleed that occurs distal to the ligament of Treitz, which included the aforementioned parts of the intestine and also included the last 1/4 of the duodenum and the entire area of the jejunum and ileum. [1]
Ischemic colitis must be differentiated from the many other causes of abdominal pain and rectal bleeding (for example, infection, inflammatory bowel disease, diverticulosis, or colon cancer). It is also important to differentiate ischemic colitis, which often resolves on its own, from the more immediately life-threatening condition of acute ...
Anal bleeding, anal pain, painful defecation. [5] Visual Exam, Digital Rectal Exam, Anoscopy, Exam under anesthesia if pain is not tolerated. [6] Non-Surgical Therapy: High Fiber Diet (25g/day for women and 38g/day for men), [7] Stool softeners, [6] increased water intake to 64oz or more daily, [7] regular exercise and bowel habits, [7] topical ...
Collagenous colitis is an inflammatory condition of the colon.Together with the related condition lymphocytic colitis, it is a subtype of microscopic colitis, which is characterized by inflammation that specifically affects the colon (i.e. colitis), and a clinical presentation that involves watery diarrhea but a lack of rectal bleeding.
The most common signs and symptoms are bleeding, which can vary from minor to severe, rectal prolapse and incomplete evacuation (35%-76% of cases). [4] According to one report, constipation is present in about 55% of cases, but diarrhea is present in 20%–40% of cases. [1] Reported symptoms are: Hematochezia (lower gastrointestinal bleeding).
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