Radionuclide imaging of Meckel's diverticulum in children

Area of Science:

• Pediatric Surgery
• Diagnostic Imaging
• Gastroenterology

Background:

• Meckel's diverticulum is a congenital anomaly of the small intestine.
• Accurate preoperative diagnosis is crucial for effective surgical planning.
• Radionuclide scintigraphy is a non-invasive imaging modality used to detect ectopic gastric mucosa within Meckel's diverticulum.

Purpose of the Study:

• To assess the diagnostic accuracy of technetium-99m pertechnetate scintigraphy in identifying Meckel's diverticulum in children.
• To evaluate the effectiveness of specific interpretation criteria for this imaging technique.

Main Methods:

• Fifty-eight pediatric patients underwent scintigraphy using technetium-99m pertechnetate.
• Study interpretation followed defined criteria to identify positive, negative, or uninterpretable scans.
• Surgical confirmation was obtained for patients with positive findings and a subset of those with negative studies.

Main Results:

• Meckel's diverticulum was surgically confirmed in all 6 patients with positive scintigraphy findings.
• Two cases of Meckel's diverticulum were identified in patients with initially negative scintigraphy results.
• Four studies were deemed uninterpretable due to diffuse intestinal radiotracer uptake.

Conclusions:

• Technetium-99m pertechnetate scintigraphy, when interpreted using the described criteria, demonstrates high specificity for diagnosing Meckel's diverticulum.
• The study suggests a low false-positive rate, supporting its utility in pediatric diagnosis.
• Further refinement of interpretation criteria may improve sensitivity and reduce uninterpretable scans.