title: Extrathyroidal Radioiodine Accumulation in a Fibroadenoma of the Breast.
abstract: A 45-year-old woman with a differentiated thyroid carcinoma received adjuvant radioiodine therapy following total thyroidectomy and left modified radical neck dissection. A posttherapy planar radioiodine scan showed multifocal uptake in the thyroid bed and left chest. SPECT/CT revealed a fibroadenoma in the left breast. Six months later, an I scan showed no iodine avidity in the breast fibroadenoma, whereas ultrasonography showed no significant change in the size of the fibroadenoma. Altered radioiodine uptake of a breast fibroadenoma can be observed on follow-up scans after cytotoxic radioiodide treatment in patients with differentiated thyroid carcinoma.
authors: From the Departments of *Nuclear Medicine, and †Pathology, Wonkwang University School of Medicine and Institute of Wonkwang Medical Science, Iksan, Korea.
authors: Myoung Hyoun
authors: MH
authors: Kim
authors: Hun Soo
authors: HS
authors: Kim
authors: Soon-Ah
authors: SA
authors: Park
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D002277:Carcinoma / Q000532:radiotherapy* / Q000601:surgery; D018226:Fibroadenoma / Q000000981:diagnostic imaging*; D006801:Humans; D007457:Iodine Radioisotopes; D008875:Middle Aged; D019275:Radiopharmaceuticals; D000072098:Single Photon Emission Computed Tomography Computed Tomography; D013964:Thyroid Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D014463:Ultrasonography
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals