Abstract
An 84-year-old man with nonmetastatic castrate-sensitive prostate cancer was referred for a 68Ga-prostate-specific membrane antigen (PSMA) PET/CT scan with a prostate-specific antigen level of 3.6 ng/mL for restaging. He was 22 years post-radical prostatectomy and had salvage radiation being managed with intermittent hormonal therapy. Imaging revealed a right lower lobe mass with increased PSMA uptake (SUVmax 6.2). Biopsy and subsequent immunostaining determined the mass to be diffuse large B-cell lymphoma. We report a case of diffuse large B-cell lymphoma diagnosed in the setting of PSMA positivity, highlighting awareness for oncologists and radiologists to know this possibility.
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