Meckel diverticulum scintigraphy: technique, findings and diagnostic pitfalls

Area of Science:

• Gastroenterology
• Pediatric Surgery
• Nuclear Medicine

Background:

• Meckel diverticulum is the most frequent congenital anomaly of the gastrointestinal tract.
• It arises from incomplete involution of the omphalomesenteric duct.
• It is a significant cause of unexplained lower gastrointestinal bleeding in children.

Purpose of the Study:

• To review the embryological origin and anatomy of Meckel diverticulum.
• To highlight the role of scintigraphy in evaluating Meckel diverticulum.
• To discuss imaging techniques, pitfalls, and incidental findings of the Meckel scan.

Main Methods:

• Technetium-99m pertechnetate Meckel scan, a scintigraphic imaging study.
• Review of embryological development and anatomical features.
• Analysis of diagnostic accuracy and potential pitfalls.

Main Results:

• The Technetium-99m pertechnetate Meckel scan is the most accurate imaging tool for Meckel diverticulum with ectopic gastric mucosa.
• The scan demonstrates a 90% accuracy in the pediatric population.
• Evaluation of biodistribution can identify unexpected pathologies.

Conclusions:

• The Meckel scan is crucial for diagnosing Meckel diverticulum, especially when ectopic gastric mucosa is present.
• Understanding the scan's nuances aids in accurate diagnosis and patient management.
• Attention to incidental findings can improve patient care.