Journal
CLINICAL NUCLEAR MEDICINE
Volume 43, Issue 11, Pages E414-E416Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/RLU.0000000000002265
Keywords
F-18-FDG PET; CT; Ga-68-PSMA PET; CT; breast carcinoma; fluorosis; signet ring cell adenocarcinoma
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Primary signet ring cell adenocarcinoma of the breast is a rare neoplasm. Similar to other mucinous neoplasms, it has low FDG avidity and poor prognosis compared with the traditional ductal/lobular carcinomas. We present a case of a 40-year-old woman with signet ring cell adenocarcinoma and skeletal fluorosis showing higher uptake of Ga-68-prostate-specific membrane antigen in the primary lesion and the metastatic sites compared with F-18-FDG on PET/CT imaging. Additionally, diffuse increased prostate-specific membrane antigen uptake was noticed in the entire skeleton, likely due to skeletal fluorosis.
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