RESUMO
An 80-year-old woman was evaluated with F-fluorocholine PET/CT in suspicion of a parathyroid adenoma. No focal parathyroid tracer uptake suggestive of adenoma was found, and instead a unilateral multinodular goiter without elevated F-fluorocholine uptake was diagnosed. In addition, focal uptake was found in a cutaneous nodule dorsally on the right shoulder. Upon pathological evaluation, this proved to be a malignant melanoma.
Assuntos
Colina/análogos & derivados , Hiperparatireoidismo Primário/complicações , Achados Incidentais , Melanoma/complicações , Melanoma/diagnóstico por imagem , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Idoso de 80 Anos ou mais , Feminino , Humanos , Hiperparatireoidismo Primário/diagnóstico por imagemRESUMO
Radioisotope-labeled prostate-specific membrane antigen (PSMA) tracers have been proven accurate for detection of prostate cancer localizations. Uptake of those tracers in other malignant and benign lesions has been reported, including faint accumulation of Ga-PSMA-HBED-CC in adrenal adenoma. A 77-year-old man with prostate carcinoma was scanned with F-DCFPyL, a promising F-labeled PSMA ligand, for prostate-specific antigen progression while on luteinizing hormone-releasing hormone agonist therapy. The PET/CT shows F-DCFPyL uptake in bilateral enlarged adrenals. Non-contrast-enhanced CT scan indicated left adrenal adenoma. Regarding the high positive predictive value of multiphase contrast-enhanced CT (98%), presence of right adrenal adenoma is also likely.
