title: False-positive 131I whole-body scan in well-differentiated thyroid cancer patient with respiratory bronchiolitis.
abstract: (131)I whole-body scan is performed during treatment and follow-up after radioiodine treatment to detect functioning thyroid remnant and metastatic lesions in differentiated thyroid carcinoma (DTC). False-positive scans are rare, but may cause a potential pitfall by misleading to unnecessary radiation exposure from inappropriate radioiodine treatment. We report a case of papillary thyroid cancer patient with false-positive (131)I scan in the lung due to pulmonary bronchiolitis. Clinical correlation and imaging characteristics obtained from additional SPECT/CT images are very helpful to indicate this lesion as a benign condition.
authors.affiliation: Division of Nuclear Medicine, Department of Radiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand. stanyalu@hotmail.com
authors.forename: Tanyaluck
authors.initials: T
authors.lastname: Thientunyakit
mesh_terms: D001988:Bronchiolitis / Q000150:complications* / Q000000981:diagnostic imaging*; D005189:False Positive Reactions; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007457:Iodine Radioisotopes; D008875:Middle Aged; D011877:Radionuclide Imaging; D013964:Thyroid Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging* / Q000601:surgery; D013965:Thyroidectomy; D051598:Whole Body Imaging
chemical_list: D007457:Iodine Radioisotopes