Apart from its physiological expression, PSMA expression has been observed in other malignant neoplasms, including transitional cell carcinoma of the bladder, hepatocellular carcinoma, non-small cell lung carcinoma, and breast carcinoma.16 Breast PSMA uptake has also been reported in association with fibroadenomas, gynecomastia, and PASH.2, –4 To our knowledge, this case is the first documented instance of intense PSMA uptake in a benign granular cell tumor of the breast. This evidence concerns the gene FOLH1 and cancer.