[Lower gastrointestinal bleeding: the great unknown].

  title={[Lower gastrointestinal bleeding: the great unknown].},
  author={Esteban Saperas},
  journal={Gastroenterologia y hepatologia},
  volume={30 2},
Lower gastrointestinal bleeding represents one-fourth of all gastrointestinal hemorrhages. The bleeding usually originates in the colon while less than 10% of cases originate in the small bowel. Colonoscopy is considered the initial procedure of choice due to its diagnostic efficacy, safety, and therapeutic potential. Mesenteric arteriography can be an alternative in patients with massive hemorrhage. Helical computed tomography of the abdomen with endovenous contrast can be useful but has not… CONTINUE READING