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The authors report a woman with a history of malignant B-cell lymphoma (MALT lymphoma) at the lower lobe of
the left lung status post left lower lobe lobectomy who underwent F-18 FDG PET/CT whole-body imaging for evaluation of
any suspicious new pulmonary lesion. The study incidentally found abnormal focal hypermetabolic activity, called incidentaloma,
at the right thyroid lobe, which was pathologically proven to be papillary thyroid carcinoma. She was further treated
with radioiodine therapy after a total thyroidectomy had been done.
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