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Updated: Aug 18, 2026
Molecular and Immunologic Techniques in a Genetically Engineered Mouse Model of Gastrointestinal Stromal Tumor
Published on: May 2, 2022
Multitarget Molecular Imaging-based Characterization of Gastrointestinal Stromal Tumor
Sayan Manna1,2, Saurabh Jindal1, Farrokh Dehdashti1,3
1Division of Nuclear Medicine, Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO.
Abstract:
The imaging arsenal for nuclear medicine physicians continues to grow rapidly with multiple radiopharmaceuticals now being used routinely in clinical practice. More specifically, PET imaging targeting various aspects of tumor biology has demonstrated utility in diagnosing incidental/synchronous malignancies as well as biochemical profiling of tumors for prognostication (ie, in the setting of prostate and neuro-endocrine cancers). These concepts are illustrated in this case of an incidental gastric gastrointestinal stromal tumor (GIST) which was imaged with 3 separate PET radiopharmaceuticals.
Insights
Positron emission tomography (PET) imaging aids in diagnosing incidental malignancies like gastric gastrointestinal stromal tumors (GIST). This case highlights PET
Area of Science:
- Nuclear medicine
- Oncology
- Radiopharmaceuticals
Background:
- Nuclear medicine imaging, particularly PET, is expanding with new radiopharmaceuticals.
- PET imaging aids in diagnosing incidental malignancies and tumor prognostication.
- Gastric gastrointestinal stromal tumors (GIST) are rare mesenchymal neoplasms.
Purpose of the Study:
- To illustrate the utility of multiple PET radiopharmaceuticals in evaluating an incidental gastric GIST.
- To demonstrate the application of advanced PET imaging in characterizing rare tumors.
Main Methods:
- Case report of a patient with an incidentally discovered gastric GIST.
- Utilized three distinct PET radiopharmaceuticals for imaging the tumor.
- Correlated imaging findings with histopathology.
Main Results:
- PET imaging successfully visualized the gastric GIST.
- Different radiopharmaceuticals provided complementary information about tumor biology.
- Imaging findings were consistent with the final diagnosis.
Conclusions:
- Multiple PET radiopharmaceuticals can offer comprehensive insights into incidental tumors like GIST.
- PET imaging is a valuable tool for characterizing and managing gastric GIST.
- This case underscores the evolving role of PET in oncologic diagnostics.
