Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPDUARTE, Paulo SchiavomMARIN, Jose Flavio GomesCARVALHO, Jose Willegaignon De Amorim DeSAPIENZA, Marcelo TatitBUCHPIGUEL, Carlos Alberto2018-09-132018-09-132018CLINICAL NUCLEAR MEDICINE, v.43, n.8, p.623-624, 20180363-9762https://observatorio.fm.usp.br/handle/OPI/28084We report a case of a medullary thyroid carcinoma noncalcified brain metastasis characterized on Ga-68-dotatate PET/CT but not on an F-18-fluoride PET/CT performed 1 month later. Subsequent F-18-fluoride PET/CT studies performed 7 and 19 months after the Ga-68-dotatate PET/CT study demonstrated focal uptake in the metastasis. The CT images of the last PET/CT study also depicted a small focus of calcification beginning in the metastatic site.engrestrictedAccessmedullary thyroid carcinomaGa-68Ga-68-dotaF-18F-18-NaFPETCTtumorBrain Metastasis of Medullary Thyroid Carcinoma Without Macroscopic Calcification Detected First on 68Ga-Dotatate and Then on 18F-Fluoride PET/CTarticleCopyright LIPPINCOTT WILLIAMS & WILKINS10.1097/RLU.0000000000002163Radiology, Nuclear Medicine & Medical Imaging1536-0229