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Case C. Transverse slice of fused PET/CT (A) and PSMA PET (B), and lateral maximum intensity projection of PSMA PET with indication of prior radiotherapy field in red (C). Complete loss of PSMA uptake is seen in most salivary glands after radiotherapy. Remarkably, PSMA PET indicates hypertrophy of the spared minor salivary glands in the lips (green arrows). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
