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  • Title: Detection of occult thymoma during exercise thallium 201, technetium 99m tetrofosmin imaging for coronary artery disease.
    Author: Paull DE, Graham J, Forgetta J, Turissini T, Saidman B.
    Journal: Chest; 2000 Aug; 118(2):550-1. PubMed ID: 10936156.
    Abstract:
    Thallium (Tl) 201 and technetium (Tc) 99m tetrofosmin single-photon emission CT are routinely used in the evaluation of coronary artery disease. Mediastinal tumors demonstrate Tl 201 and Tc 99m tetrofosmin uptake. We report a 56-year-old man who developed chest pain after a previously successful angioplasty and stent of the left anterior descending coronary artery. He underwent a Tl 201, Tc 99m tetrofosmin exercise study. Abnormal mediastinal activity was visualized in both the Tl 201 and Tc 99m tetrofosmin images. Subsequently, the patient underwent resection of a stage II thymoma. Unanticipated focal extracardiac accumulation during myocardial scintiscanning should lead to further investigation to exclude mediastinal tumor.
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