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Nonfunctioning thyroid nodule: Appearance on thyroid scintigraphy

123-I thyroid scan demonstrating typical appearance of a large, 3.5 cm hypofunctioning ("cold") nodule in the left upper lobe of the thyroid. The position of the nodule is outlined in white.

SSN: suprasternal notch; 123-I: iodine-123.

Courtesy of Douglas Ross, MD.

Graphic 68835 Version 4.0