Gastrointestinal Stromal Tumor Showing Intense Tracer Uptake on PSMA PET/CT

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A 70-year-old man with suspected prostate cancer was referred for 68Ga-PSMA-HBED-CC PET/CT (short PSMA PET/CT) for staging of tumor extent. Apart from vivid tracer uptake in the prostate gland and osseous metastasis, PSMA PET/CT revealed a large soft tissue mass with calcifications in the left upper abdomen showing intense tracer uptake. Histologic examination revealed the mass to be a gastrointestinal stromal tumor.

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