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  2. Ulcerative colitis - Wikipedia

    en.wikipedia.org/wiki/Ulcerative_colitis

    People with ulcerative colitis usually present with diarrhea mixed with blood, [12] of gradual onset that persists for an extended period of time (weeks). It is estimated that 90% of people experience rectal bleeding (of varying severity), 90% experience watery or loose stools with increased stool frequency (diarrhea), and 75-90% of people ...

  3. Gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/wiki/Gastrointestinal_bleeding

    Common causes of lower gastrointestinal bleeding include hemorrhoids, cancer, angiodysplasia, ulcerative colitis, Crohn's disease, and aortoenteric fistula. [2] It may be indicated by the passage of fresh red blood rectally, especially in the absence of bloody vomiting. Lower gastrointestinal bleeding could also lead to melena if the bleeding ...

  4. Lower gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/.../Lower_gastrointestinal_bleeding

    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]

  5. Hematochezia - Wikipedia

    en.wikipedia.org/wiki/Hematochezia

    A complete blood count as well as an hemoglobin test should be performed when a patient presents symptoms of hematochezia. A colonoscopy may be necessary if there is suspicion of bleed from colon particularly in the elderly to look for the site and many causes of bleed like carcinoma, ulcerative colitis, rectal varices or other lesions and in certain instances upper gastrointestinal endoscopy ...

  6. Inflammatory bowel disease - Wikipedia

    en.wikipedia.org/wiki/Inflammatory_bowel_disease

    Dietary patterns are associated with a risk for ulcerative colitis. In particular, subjects who were in the highest tertile of the healthy dietary pattern had a 79% lower risk of ulcerative colitis. [26] Gluten sensitivity is common in IBD and associated with having flareups. Gluten sensitivity was reported in 23.6% and 27.3% of Crohn's disease ...

  7. Blood in stool - Wikipedia

    en.wikipedia.org/wiki/Blood_in_stool

    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]

  8. Colonic ulcer - Wikipedia

    en.wikipedia.org/wiki/Colonic_ulcer

    Ulcerative colitis is a type of inflammatory bowel disease (IBD). [4] It is a long-term condition that results in inflammation and ulcers of the colon and rectum. [4] [5] The primary symptoms of active disease are abdominal pain and diarrhea mixed with blood (hematochezia). Weight loss, fever, and anemia may also occur. Often, symptoms come on ...

  9. Ischemic colitis - Wikipedia

    en.wikipedia.org/wiki/Ischemic_colitis

    Ischemic colitis is responsible for about 1 in 2000 hospital admissions and is seen on about 1 in 100 endoscopies. [4] Men and women are affected equally; ischemic colitis is a disease of the elderly, with more than 90% of cases occurring in people over the age of 60. [4]

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