Thyroid Incidentaloma on 18F-fluorocholine PET/CT and 68Ga-PSMA PET/CT Revealing a Medullary Thyroid Carcinoma. (August 2019)

• Record Type: Journal Article
• Authors: Ciappuccini, Renaud; Edet-Sanson, Agathe; Saguet-Rysanek, Virginie; Gauthé, Mathieu; Bardet, Stéphane
• Is Part Of: Clinical nuclear medicine. Volume 44:Number 8(2019)
• Publication Date: 2019-08
• Subjects: thyroid incidentaloma -- medullary thyroid cancer -- 18F-fluorocholine PET/CT -- 18F-choline PET/CT -- 68Ga-PSMA PET/CT -- prostate cancer; Nuclear medicine -- Periodicals; Radioisotope scanning -- Periodicals; Nuclear Medicine -- Periodicals; 616.07575
• DOI: 10.1097/RLU.0000000000002559
• Languages: English
• ISSNs: 0363-9762

Abstract

Abstract : Abstract: A 66-year-old man with prostate cancer underwent 18 F-fluorocholine PET/CT and thereafter 68 Ga-labeled prostate-specific membrane antigen PET/CT to explore a rising prostate-specific antigen level. Both PET/CT studies showed a thyroid incidentaloma of the right lobe. Neck ultrasound confirmed the presence of a 16-mm right thyroid nodule. The serum calcitonin level was moderately increased at 25 ng/mL (<10). Cytology was non-diagnostic (Bethesda I). A right lobectomy was performed and pathology revealed a 15-mm medullary thyroid cancer. Two months after surgery, the calcitonin level returned to normal at 3.3 ng/mL.