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Meckel's diverticulum
J P Martin1, P D Connor, K Charles
1College of Medicine, University of Tennessee, Memphis, USA.
Abstract:
Although Meckel's diverticulum is the most prevalent congenital abnormality of the gastrointestinal tract, it is often difficult to diagnose. It may remain completely asymptomatic, or it may mimic such disorders as Crohn's disease, appendicitis and peptic ulcer disease. Ectopic tissue, found in approximately 50 percent of cases, consists of gastric tissue in 60 to 85 percent of cases and pancreatic tissue in 5 to 16 percent. The diagnosis of Meckel's diverticulum should be considered in patients with unexplained abdominal pain, nausea and vomiting, or intestinal bleeding. Major complications include bleeding, obstruction, intussusception, diverticulitis and perforation. The most useful method of diagnosis is with a technetium-99m pertechnetate scan, which is dependent on uptake of the isotope in heterotopic tissue. Management is by surgical resection.
Insights
Meckel
Area of Science:
- Gastroenterology
- Surgical Pathology
- Diagnostic Imaging
Background:
- Meckel's diverticulum is the most common congenital anomaly of the small intestine.
- It often presents asymptomatically but can mimic other gastrointestinal disorders.
- Ectopic tissue, frequently gastric or pancreatic, is found in about half of cases.
Observation:
- Diagnosis is challenging due to varied presentations, including abdominal pain, nausea, vomiting, and bleeding.
- Complications encompass bleeding, obstruction, intussusception, diverticulitis, and perforation.
- Technetium-99m pertechnetate scintigraphy is a key diagnostic tool, detecting heterotopic gastric or pancreatic tissue.
Findings:
- The technetium scan's efficacy relies on isotope uptake by ectopic tissue within the diverticulum.
- Early consideration of Meckel's diverticulum is crucial for patients with unexplained GI symptoms.
- Surgical resection remains the definitive management strategy for symptomatic or complicated cases.
Implications:
- Improved diagnostic accuracy for Meckel's diverticulum can prevent delayed treatment and complications.
- Understanding the prevalence and varied presentations aids in differential diagnosis.
- Effective imaging modalities like the technetium scan are vital for timely intervention.