[Massive lower digestive bleeding].
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Lower digestive bleeding is the bleeding distal to the ligament of Treitz and ranges from occult loss to massive hemorrhage. Acute and massive form represents about 20% of all gastrointestinal acute bleeding. In children and young patients the most frequent causes are juvenile, polyps Meckel diverticula, and intussusception; in adult ages are the diverticular disease of colon, angiodysplasia and neoplasia; we must include also the intestinal TBC, typhoid fever, and intestinal amebiasis. The first aim in the management of this acute syndrome is the treatment of the hypovolemic shock; when the patient is well resuscitated, the diagnosis of the cause of hemorrhage will start using the clinical history and physical examination, proctosigmoidoscopy, emergency colonoscopy and/or angiography, or scintigraphy with 99mTc-labeled red blood cells. Definitive therapy include endoscopic an angiographic methods, or the emergency surgery. Mortality is 11% to 21%.