Lower GI Bleeds

Dec 27, 2025

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Lower GI bleeds refer to the loss of blood from the gastrointestinal tract distal to the ligament of Treitz, marking the junction between the duodenum and jejunum. Common causes in children and adolescents include Meckel's diverticulum, intussusception, polyposis syndromes, and inflammatory bowel disease (IBD). Symptoms may present as maroon or red-stained stools (hematochezia), bright red rectal blood, and signs of anemia, such as pallor and weakness. A thorough history is essential for diagnosis, encompassing factors like IBD, weight loss, and family history of cancer.

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Lower GI Bleeds

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Lower GI Bleeds Jeeves
Definition • The loss of blood from the GI tract distal to the ligament of Trietz. • This is the anatomical marker for the junction between the duodenum and the jejunum.
Causes Meckeldiverticulum, intussusception, polyposis syndromes, and IBD are the common causes of GI bleeding in children and adolescents
Signs and Symptoms • Maroon/red stained stools (hematochezia) or bright red blood from the rectum. • Malaena may also occur but it points more towards upper GI bleeds. • Hypotension; tachycardia • Pallour, weakness, fainting and other signs of anaemia (if chronic) • Perform History and ask about IBD, weight loss, FHx of Ca, stomach pain, bleeding disorders, last period.