Benign oral disease as a cause of false-positive iodine-131 scans.
Post-thyroidectomy I-131 whole-body scintigraphy is an important aspect in the management of patients with thyroid cancer. The scan is used to detect residual thyroid tissue and distant functioning metastases. Extrathyroid I-131 accumulation does not always denote metastatic disease, and several potential sources of false-positive I-131 scans have been identified. This report presents four cases of benign oral disease as a cause of false-positive I-131 uptake. Benign oral disease has not been documented previously as an important source of false-positive I-131 whole-body scans.
Wadhwa
S S
SS
Illawarra Regional Hospital, Wollongong, New South Wales, Australia. swadhwa@ozemail.com.au
Mansberg
R
R
D000328:Adult; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D008875:Middle Aged; D010309:Parotitis / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013964:Thyroid Neoplasms / Q000473:pathology; D014076:Tooth Diseases / Q000000981:diagnostic imaging*
D007457:Iodine Radioisotopes