Abstract
Abnormal focal accumulation of 131I is generally a reliable indicator of differentiated thyroid cancer metastases. However, many examples of false-positive 131I uptake were reported, some of them of unusual nature. We report a case of 32-year-old man with differentiated thyroid cancer who underwent thyroid remnants ablation with radioiodine. An area of considerable 131I uptake projecting onto lateral cervical areas was detected on posttherapy planar whole-body scan. Neck SPECT/CT scan was done to elucidate localization of the uptake, and activity was found in the patient's beard.
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