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heme-positive Medtalk adjective referring to stool that contains heme, often associated with colorectal CA. See Occult blood. Cf Heme-negative.
Purpose: Current ACG guidelines recommend screening colonoscopies (CS) in average risk people every 10 years beginning at age 50. However, no guidelines or data address the most appropriate evaluation of patients who had normal baseline CS but subsequently presented for the evaluation of hemoccult positive stool (HPS).
13 Οκτ 2023 · The blood often shows up in stool or vomit but isn't always obvious. Stool may look black or tarry. Bleeding can range from mild to severe and can be life-threatening. Imaging technology or an endoscopic investigation can usually locate the cause of the bleeding.
Hematemesis is the vomiting of blood, which may be obviously red or have an appearance similar to coffee grounds. Melena is the passage of black, tarry stools. Hematochezia is the passage of fresh blood per anus, usually in or with stools.
Definition. Tests for fecal occult blood detect blood in the stool that is not visible on gross inspection, usually less than 50 mg of hemoglobin per gram of stool. Normal adults usually show less than 2 to 3 mg/gm. Increased amounts are associated with a variety of benign and malignant gastrointestinal diseases, especially colonic neoplasms ...
Occult bleeding is detected only by testing a stool specimen with special chemicals. Hematemesis is blood that is visible in vomit. Hematemesis indicates the bleeding is coming from the upper GI tract, usually from the esophagus, stomach, or the first part of the small intestine.
Hematemesis is vomiting of red blood and indicates upper GI bleeding, usually from a peptic ulcer, vascular lesion, or varix. Coffee-ground emesis is vomiting of dark brown, granular material that resembles coffee grounds.
