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  2. 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]

  3. Gastrointestinal bleeding - Wikipedia

    en.wikipedia.org/wiki/Gastrointestinal_bleeding

    An upper GI bleed is more common than lower GI bleed. [2] An upper GI bleed occurs in 50 to 150 per 100,000 adults per year. [8] A lower GI bleed is estimated to occur in 20 to 30 per 100,000 per year. [2] It results in about 300,000 hospital admissions a year in the United States. [1] Risk of death from a GI bleed is between 5% and 30%.

  4. Hematochezia - Wikipedia

    en.wikipedia.org/wiki/Hematochezia

    Hemorrhoid, gastritis, gastrointestinal bleeding, stomach cancer. Hematochezia is a form of blood in stool, in which fresh blood passes through the anus while defecating. It differs from melena, which commonly refers to blood in stool originating from upper gastrointestinal bleeding (UGIB). [1] The term derives from Greek αἷμα ("blood ...

  5. Gastric antral vascular ectasia - Wikipedia

    en.wikipedia.org/wiki/Gastric_antral_vascular...

    Gastric antral vascular ectasia (GAVE) is an uncommon cause of chronic gastrointestinal bleeding or iron deficiency anemia. [1][2] The condition is associated with dilated small blood vessels in the gastric antrum, which is a distal part of the stomach. [1] The dilated vessels result in intestinal bleeding. [3]

  6. Ischemic colitis - Wikipedia

    en.wikipedia.org/wiki/Ischemic_colitis

    Ischemic colitis. Ischemic colitis (also spelled ischaemic colitis) is a medical condition in which inflammation and injury of the large intestine result from inadequate blood supply (ischemia). Although uncommon in the general population, ischemic colitis occurs with greater frequency in the elderly, and is the most common form of bowel ...

  7. Angiodysplasia - Wikipedia

    en.wikipedia.org/wiki/Angiodysplasia

    In medicine (gastroenterology), angiodysplasia is a small vascular malformation of the gut. It is a common cause of otherwise unexplained gastrointestinal bleeding and anemia. Lesions are often multiple, and frequently involve the cecum or ascending colon, although they can occur at other places. Treatment may be with colonoscopic interventions ...

  8. Intestinal ischemia - Wikipedia

    en.wikipedia.org/wiki/Intestinal_ischemia

    Chronic: 1 per 100,000 [5] Intestinal ischemia is a medical condition in which injury to the large or small intestine occurs due to not enough blood supply. [2] It can come on suddenly, known as acute intestinal ischemia, or gradually, known as chronic intestinal ischemia. [1] The acute form of the disease often presents with sudden severe ...

  9. Dieulafoy's lesion - Wikipedia

    en.wikipedia.org/wiki/Dieulafoy's_lesion

    1.5% of gastrointestinal bleeding. Dieulafoy's lesion (French: [djølafwa]) is a medical condition characterized by a large tortuous artery [2] most commonly in the stomach wall (submucosal) that erodes and bleeds. It can present in any part of the gastrointestinal tract. [3] It can cause gastric hemorrhage [4] but is relatively uncommon.