Concurrent Benign Iodine-Avid Thymic and Liver Cysts Mimicking Metastatic Disease on 131I Whole-Body Scintigraphy

A 57-year-old woman received radioiodine therapy post total thyroidectomy for pT3aNxMx follicular thyroid carcinoma. Posttherapy 131I whole-body scan showed 131I concentration in the chest, mediastinum, and left upper thigh with stimulated thyroglobulin (Tg) of 89 μg/L. Subsequent radioiodine therap...

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Bibliographic Details
Published in:Clinical nuclear medicine 2024-03, Vol.49 (3), p.250-252
Main Authors: Kamarulzaman, Kamalia, Mohd Rohani, Mohd Fazrin, Mat Nawi, Norazlina, Amir Hassan, Siti Zarina
Format: Article
Language:English
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Summary:A 57-year-old woman received radioiodine therapy post total thyroidectomy for pT3aNxMx follicular thyroid carcinoma. Posttherapy 131I whole-body scan showed 131I concentration in the chest, mediastinum, and left upper thigh with stimulated thyroglobulin (Tg) of 89 μg/L. Subsequent radioiodine therapies showed persistent 131I accumulation in the anterior mediastinal soft tissue lesions and a hypodense segment VII liver lesion visualized on SPECT/CT, suggestive of iodine-avid metastatic disease despite the undetectable serum Tg (
ISSN:0363-9762
1536-0229
DOI:10.1097/RLU.0000000000005037