131I and 124I Accumulation in a Thymic Cyst. (December 2016)

• Record Type: Journal Article
• Authors: Wilhelm, Tom; Winkens, Thomas; Kunze, Almut; Freesmeyer, Martin
• Is Part Of: Clinical nuclear medicine. Volume 41:Number 12(2016)
• Publication Date: 2016-12
• Subjects: false-positive iodine accumulation -- 131I -- 124I-PET/CT -- PET/US fusion -- thyroid -- carcinoma -- thymic cyst; Nuclear medicine -- Periodicals; Radioisotope scanning -- Periodicals; Nuclear Medicine -- Periodicals; 616.07575
• DOI: 10.1097/RLU.0000000000001398
• Languages: English
• ISSNs: 0363-9762

Abstract

Abstract : Abstract: A 65-year-old woman presented with increased human thyroglobulin (3.3 ng/mL) 5 years after resection of a papillary thyroid carcinoma and successful 131 I radioiodine therapy. 131 I whole-body scintigraphy showed a small focus ventrally in the right lower neck, leading to suspicion of a papillary thyroid carcinoma recurrence. 124 I-PET/CT and real-time PET/US fusion matched to a small hypoechoic/anechoic ovoid structure situated between the right sternoclavicular joint and the brachiocephalic trunk. After surgical resection, histology allowed a diagnosis of thymic cyst. A follow-up 131 I whole-body scintigraphy showed no residual iodine accumulation.