Thyroid Incidentaloma on 18F-fluorocholine PET/CT and 68Ga-PSMA PET/CT Revealing a Medullary Thyroid Carcinoma

Abstract : A 66-year-old man with prostate cancer underwent F-fluorocholine PET/CT and thereafter 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.
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https://www.hal.inserm.fr/inserm-02276349
Contributor : Myriam Bodescot <>
Submitted on : Monday, September 2, 2019 - 3:24:09 PM
Last modification on : Wednesday, December 4, 2019 - 9:52:03 AM

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Renaud Ciappuccini, Agathe Edet-Sanson, Virginie Saguet-Rysanek, Mathieu Gauthé, Stéphane Bardet. Thyroid Incidentaloma on 18F-fluorocholine PET/CT and 68Ga-PSMA PET/CT Revealing a Medullary Thyroid Carcinoma. Clinical Nuclear Medicine, Lippincott, Williams & Wilkins, 2019, 44 (8), pp.663-665. ⟨10.1097/RLU.0000000000002559⟩. ⟨inserm-02276349⟩

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