Thyroid cancer presenting as an incidentaloma detected on F-18 FDG PET/CT imaging: A case report.

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.