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Eating beetroot can cause harmless red-colored feces because of insufficient metabolism of a red pigment, and is a differential sign that may be mistaken as hematochezia. Consumption of dragon fruit or blackberries may also cause red or black discoloration of the stool and sometimes the urine (pseudohematuria). This too, is a differential sign ...
Endoscopic image of a posterior wall duodenal ulcer with a clean base, which is a common cause of upper gastrointestinal hemorrhage. Specialty: Gastroenterology: Symptoms: Hematemesis (vomiting blood), coffee ground vomiting, melena, hematochezia (maroon-coloured stool) in severe cases
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]
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 ...
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]
The most common cause of melena is peptic ulcer disease. [5] However, any bleeding within the upper gastrointestinal tract or the ascending colon can lead to melena. [6] Melena may also be a complication of anticoagulant medications, such as warfarin. [7]
The most common causes of CKD are high blood pressure and diabetes, "which damage the small blood vessels and filtering units in the kidneys over time," says Nagata. Other potential causes he ...
The most common causes for hemoptysis in adults are chest infections such as bronchitis or pneumonia. [1] In children, hemoptysis is commonly caused by the presence of a foreign body in the airway. Other common causes include lung cancers and tuberculosis.