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Demystifying Meckel's diverticulum - a guide for the gastroenterologist
Kimberley Butler1, Thomas Peachey2, Reena Sidhu1,3
1Academic Unit of Gastroenterology, Royal Hallamshire Hospital.
Purpose Of Review:
Meckel's diverticulum (MD) is a common congenital ileal diverticulum. Whilst mostly asymptomatic, 4-9% develop complications, such as small bowel obstruction, diverticulitis or bleeding. In 1933, Charles Mayo wrote that MD is 'frequently suspected, often looked for and seldom found', and it continues to pose a diagnostic challenge today. With advancements in small bowel imaging and endoscopy, this review outlines the gastroenterologist's approach to MD.
Recent Findings:
There are a number of strategies for diagnosing MD. Meckel's scan has a sensitivity of 80-92% in children but 62-88% in adults. The diagnostic yield of small bowel capsule endoscopy (SBCE) is only up to 50%. Device-assisted enteroscopy (DAE) has a sensitivity of 84-100% for MD but is invasive. The definitive treatment for symptomatic MD is surgical resection, but the management of asymptomatic cases are controversial. A recent systematic review favoured resection of incidental MD.
Summary:
A high index of suspicion and a multimodality combination of SBCE, Meckel's scan, CT and DAE is often required to diagnose MD. Complicated MD is treated by surgical resection. Management of incidental MD remains debated, although current evidence appears to favour resection.
Insights
Diagnosing Meckel's diverticulum (MD) remains challenging. A combination of imaging and endoscopic techniques, alongside a high index of suspicion, is often required for accurate diagnosis and management.
Area of Science:
- Gastroenterology
- Diagnostic Imaging
- Surgical Management
Background:
- Meckel's diverticulum (MD) is a common congenital anomaly of the ileum.
- While often asymptomatic, MD can lead to complications like obstruction, diverticulitis, or bleeding.
- Accurate diagnosis of MD continues to be a challenge in clinical practice.
Purpose of the Study:
- To review the gastroenterologist's approach to diagnosing Meckel's diverticulum.
- To outline current diagnostic strategies and management options for MD.
- To highlight the diagnostic challenges associated with Meckel's diverticulum.
Main Methods:
- Review of diagnostic modalities including Meckel's scan, small bowel capsule endoscopy (SBCE), and device-assisted enteroscopy (DAE).
- Discussion of imaging techniques such as CT scans.
- Analysis of treatment strategies for symptomatic and asymptomatic MD.
Main Results:
- Meckel's scan sensitivity ranges from 80-92% in children and 62-88% in adults.
- Small bowel capsule endoscopy (SBCE) has a diagnostic yield of up to 50%.
- Device-assisted enteroscopy (DAE) shows high sensitivity (84-100%) but is invasive; surgical resection is definitive for symptomatic MD.
Conclusions:
- Accurate diagnosis of Meckel's diverticulum often necessitates a multimodality approach combining imaging and endoscopy.
- Surgical resection is the standard treatment for complicated MD.
- The management of incidental Meckel's diverticulum is debated, but current evidence suggests favoring resection.
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