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Diagnosis of ectopic gastric mucosa using 99Tcm-pertechnetate: spectrum of scintigraphic findings

R Kumar1, M Tripathi, N Chandrashekar

  • 1Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.

The British Journal of Radiology
|July 28, 2005
PubMed

Insights

Technetium Tc-99m pertechnetate scintigraphy reveals diverse patterns of ectopic gastric mucosa in children. Delayed imaging is crucial for detecting intrathoracic lesions, aiding diagnosis.

Area of Science:

  • Nuclear Medicine
  • Pediatric Radiology
  • Gastroenterology

Background:

  • Ectopic gastric mucosa can occur in various locations, presenting diagnostic challenges.
  • Scintigraphy using Technetium Tc-99m pertechnetate is a key imaging modality for detecting functioning ectopic gastric mucosa.

Purpose of the Study:

  • To illustrate the spectrum of scintigraphic findings in children with ectopic gastric mucosa.
  • To emphasize the utility of delayed imaging in specific ectopic gastric mucosa locations.

Main Methods:

  • Retrospective analysis of 11 pediatric patients undergoing Technetium Tc-99m pertechnetate scintigraphy.
  • Evaluation of scintigraphic patterns based on the location of ectopic gastric mucosa (Meckel's diverticula, intestinal duplications, gastric duplications, intrathoracic duplication cysts).

Main Results:

  • Functioning ectopic gastric mucosa was identified in Meckel's diverticula (3), small bowel duplications (4), gastric duplication (1), and intrathoracic foregut duplication cysts (3).
  • Simultaneous visualization with the stomach occurred for Meckel's and gastric duplications.
  • Intestinal duplications showed earlier or dynamic tracer visualization.
  • Delayed images were essential for detecting ectopic gastric mucosa in intrathoracic duplication cysts.

Conclusions:

  • Technetium Tc-99m pertechnetate scintigraphy demonstrates varied patterns of ectopic gastric mucosa.
  • Delayed imaging is critical for diagnosing ectopic gastric mucosa in intrathoracic duplication cysts when initial images are inconclusive.
  • Understanding these scintigraphic patterns aids in accurate diagnosis and management.

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