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Unveiling the Mystery of Lower GI Bleeding: What Could It Be?
Published: Mar 14, 2024
Lower gastrointestinal bleeding (LGIB) can be alarming, but understanding its causes can help in managing the condition effectively. This article sheds light on the various reasons behind LGIB and offers insights into its diagnosis.
Understanding LGIB
Lower gastrointestinal bleeding refers to blood loss originating from the intestines below the ligament of Treitz. It can manifest as bright red or maroon blood in the stool. Unlike upper GI bleeding, which may cause vomiting of blood, LGIB often results in hematochezia, making it crucial to differentiate between the two for accurate diagnosis.
Common Causes of LGIB
The primary causes of LGIB include diverticulosis, vascular issues like angiodysplasia, inflammatory conditions such as inflammatory bowel disease, and neoplastic sources like colon cancer. Diverticulosis is the most prevalent, accounting for up to 55% of cases, while angiodysplasia is more common in older adults.
Diagnosing LGIB
Determining the source of LGIB involves various diagnostic tools. A colonoscopy can help identify diverticula or vascular abnormalities. In some cases, imaging or endoscopic techniques are used to pinpoint the exact cause. Accurate diagnosis is essential for effective treatment.
Frequently Asked Questions
LGIB refers to bleeding from the lower part of the gastrointestinal tract.
Diverticulosis, angiodysplasia, and inflammatory conditions are common causes.
Colonoscopy and imaging techniques are often used for diagnosis.
It can be severe, but many cases are self-limiting.
The Bottom Line
Understanding the causes of LGIB is the first step towards effective management and treatment.
References
- Zuccaro G Jr. Management of the adult patient with acute lower gastrointestinal bleeding. Am J Gastroenterol 1998; 93:1202.
- Drezdzon MK, Peterson KJ. Evaluation and Management of Lower GI Bleeding. Dis Colon Rectum 2022; 65:785.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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