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Updated: Feb 3, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Gastric GIST Incidentally Detected on 68Ga-PSMA-PET/CT: Correlation Between Functional Imaging and Histology
Sofia Vaz1, Carla Oliveira, Joana C Castanheira
1From the Department of Nuclear Medicine, Champalimaud Foundation, Lisbon, Portugal.
Abstract:
Prostate-specific membrane antigen (PSMA) is specific for prostate cancer cells; nevertheless when finding uptake in abnormal locations for prostate cancer metastases, it is important to consider other hypothesis, including second cancers. There are several papers about PSMA expression in many different types of cancer, but few reported expression in gastrointestinal stromal tumors (GIST). In this case, we documented the GIST lesion not only by PET/CT but also by gastroscopy and histology. Additionally, PSMA immunochemistry was performed, showing PSMA expression in tumoral GIST cells (not in endothelial cells), evidencing a good correlation between PET/CT image and histology.
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