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A 60-year-old man reported chest pain and shortness of breath. His medical history was negative for myocardial infarction but positive for "mini strokes" and type 2 diabetes mellitus. Tc-99m sestamibi cardiac imaging revealed an abnormal focus of increased activity in the left lobe of the thyroid. Although no cardiac abnormalities were found, a I-123 thyroid scan subsequently showed a solitary hypofunctioning nodule involving the middle and inferior aspects of the left lobe of the thyroid, which fine-needle aspiration proved was a Hurthle cell carcinoma.

Real time echocardiographyhas revolutionized the evaluatlon oflnfants with cyanosis thought to be cardiovascular In origin.

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