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I-131 Visualization of Thoracic Aortic Aneurysm After Radioiodine Administration for Thyroid Carcinoma

Bares, Luisa M. Mena, MD; Casas, Juan Antonio Vallejo, MD, PhD; Ortega, Estefanía Moreno, MD; del Real Nuñez, Ramón, MD; Muret, Francisco R. Maza, MD; Romero, José María Latre, MD, PhD

doi: 10.1097/RLU.0b013e31817deb95
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A 69-year-old woman diagnosed with papillary thyroid carcinoma was treated with total thyroidectomy and radioiodine ablation. At follow-up a whole body I-131 scan after injection of rhTSH was performed. This scan shows unexpected uptake in the superior mediastinum, initially misinterpreted as metastases (Tg level: 6.8 ng/mL). CT and digital subtraction angiography (DSA) confirmed that this finding was due to an aortic aneurysm. This vascular malformation was embolized and endoprosthesis was performed using a Seldinger's technique.

From the Nuclear Medicine Department, Reína Sofía Hospital, Avda. Menéndez Pidal s/n, 14004-Córdoba, Spain.

Received for publication August 30, 2007; revision accepted October 19, 2007.

Reprints: Juan Antonio Vallejo Casas, MD, PhD, Avda. Menéndez Pidal s/n. 14004-Córdoba. Spain. E-mail: javallejo@javallejo.jazztel.es. or jantonio.vallejo.sspa@juntadeandalucia.

© 2008 Lippincott Williams & Wilkins, Inc.