Incidental Detection of Tracer Avidity in Liposarcoma on 68Ga-Labeled Prostate-Specific Membrane Antigen PET/CT

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Abstract

68Ga-labeled prostate-specific membrane antigen (PSMA) PET/CT is emerging as new reference standard for imaging of prostate cancer because of superb diagnostic performance in disease staging and recurrence detection. However, a number of isolated reports have been published recently regarding the nonspecific uptake of 68Ga-PSMA in nonprostatic benign or malignant pathologies. We describe the case of a 76-year-old man who underwent 68Ga-labeled PSMA PET/CT for suspicion of prostate cancer. Whole-body PET/CT of whom revealed tracer avidity in lipomatous lesion involving the left sartorius muscle. Histopathologic examination of lesion revealed a well-differentiated liposarcoma.

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