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Detection of Occult Thymoma During Exercise Thallium 201, Technetium 99m Tetrofosmin Imaging for Coronary Artery Disease*

Douglas E. Paull, MD, FCCP; Joan Graham, DO; Joan Forgetta, MD; Thomas Turissini, MD; Bruce Saidman, MD
Author and Funding Information

*From the Departments of Thoracic Surgery (Dr. Paull), Nuclear Medicine (Drs. Graham and Forgetta), Cardiology (Dr. Turissini), and Oncology (Dr. Saidman), Wilkes Barre General Hospital, Wilkes Barre, PA.

Correspondence to: Douglas E. Paull, MD, FCCP, 200 S. River St., Plains, PA 18705; e-mail: dep78@aol.com



Chest. 2000;118(2):550-551. doi:10.1378/chest.118.2.550
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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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