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FDG-PET uptake patterns within the parotid glands. FDG-PET/CT showing (A) no increased uptake in the parotid glands of a subject without pathology in the head/neck region, (B) increased uptake in both parotid glands in a pSS patient, and (C) intense uptake in both parotid glands of a pSS patients with histologically confirmed parotid salivary gland MALT lymphoma.
