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Blood in stool or rectal bleeding 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 ...
- Hematochezia
Symptoms. bright blood in stool. Causes. Hemorrhoid,...
- Fecal occult blood
Fecal occult blood (FOB) refers to blood in the feces that...
- Hematochezia
Causas. Diagnóstico. Tratamento. Referências. Hematoquezia. Hemorroidas de grau 2, registradas com câmara de colonoscopia. Hematoquezia ou hemorragia retal é o termo médico utilizado para designar a presença de sangue vermelho pelo ânus, sinal de uma hemorragia digestiva baixa. [ 1] .
Symptoms. bright blood in stool. Causes. Hemorrhoid, gastritis, gastrointestinal bleeding, stomach cancer. Haematochezia is the passage of fresh blood through the anus, usually in or with stools (contrast with melena ). [1] The term is from Greek αἷμα ("blood") and χέζειν ("to defaecate").
The stool of a person with a lower gastrointestinal bleed is a good (but not infallible) indication of where the bleeding is occurring. Black tarry appearing stools medically referred to as melena usually indicates blood that has been in the GI tract for at least 8 hours.
References. Further reading. External links. Rectal bleeding refers to bleeding in the rectum. 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.
Fecal occult blood (FOB) refers to blood in the feces that is not visibly apparent (unlike other types of blood in stool such as melena or hematochezia). A fecal occult blood test (FOBT) checks for hidden (occult) blood in the stool (feces).
Blood may be observed in vomit or in altered form as black stool. Depending on the amount of the blood loss, symptoms may include shock . Upper gastrointestinal bleeding can be caused by peptic ulcers, gastric erosions, esophageal varices, and rarer causes such as gastric cancer.
