title: False-Positive 131I Uptake in a Benign Bone Lesion on Post-therapy Scan.
abstract: A 56-year-old woman underwent near-total thyroidectomy and papillary thyroid carcinoma without extrathyroidal extension was diagnosed. The serum thyroglobulin (Tg) level was 2.4 µg/L, and anti-Tg was negative when serum thyroid-stimulating hormone level was 85 µIU/mL. She received 100 mCi (3.7 GBq) of 131I. Besides the residual thyroid tissue, a focal uptake in the left clavicular bone was seen on posttherapy 131I images. Then, CT and MRI were performed to diagnosis. All imaging findings suggested that it was a benign bone cyst. At 6-month follow-up, the serum Tg level was undetectable with the thyroid-stimulating hormone level of more than 150 µIU/mL.
authors.forename: Bulent
authors.initials: B
authors.lastname: Yazici
authors.forename: Aylin
authors.initials: A
authors.lastname: Oral
authors.forename: Cenk
authors.initials: C
authors.lastname: Eraslan
authors.forename: Mehmet
authors.initials: M
authors.lastname: Argin
authors.forename: Özgür
authors.initials: Ö
authors.lastname: Ömür
mesh_terms: D001692:Biological Transport; D001845:Bone Cysts / Q000150:complications* / Q000175:diagnosis / Q000378:metabolism*; D002277:Carcinoma / Q000150:complications* / Q000378:metabolism / Q000601:surgery / Q000628:therapy*; D002291:Carcinoma, Papillary; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes / Q000378:metabolism* / Q000627:therapeutic use; D008875:Middle Aged; D013954:Thyroglobulin / Q000097:blood; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000150:complications* / Q000378:metabolism / Q000601:surgery / Q000628:therapy*; D013965:Thyroidectomy
chemical_list: D007457:Iodine Radioisotopes; D013954:Thyroglobulin