title: False-positive radioiodine uptake in a functional ovarian cyst in a patient treated with total thyroidectomy for papillary cancer.
abstract: False positive radioiodine uptake following thyroidectomy for differentiated thyroid cancer has been reported in some cases. A 42-year-old woman was referred for ablative radioiodine treatment six weeks after undergoing total thyroidectomy for papillary thyroid carcinoma. Posttherapeutic I-131 scintigraphy showed an intense hot spot in the left pelvis. Pelvic computed tomography (CT) revealed a benign left ovarian mass such as a functional cyst. After menstruation, ultrasonographic imaging demonstrated a shrunken ovarian mass. Therefore, we diagnosed the patient with a functional cyst that was influenced by hormonal fluctuation. It is believed that this is the first case of false-positive radioiodine uptake in a functional ovarian cyst.
authors.affiliation: Department of Internal Medicine, Pusan National University School of Medicine, Korea.
authors.forename: Hye Yoon
authors.initials: HY
authors.lastname: Jang
authors.forename: Bo Hyun
authors.initials: BH
authors.lastname: Kim
authors.forename: Won Jin
authors.initials: WJ
authors.lastname: Kim
authors.forename: Yun Kyung
authors.initials: YK
authors.lastname: Jeon
authors.forename: Sang Soo
authors.initials: SS
authors.lastname: Kim
authors.forename: Yong Ki
authors.initials: YK
authors.lastname: Kim
authors.forename: In Ju
authors.initials: IJ
authors.lastname: Kim
mesh_terms: D000328:Adult; D002277:Carcinoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D002291:Carcinoma, Papillary; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes / Q000378:metabolism; D010048:Ovarian Cysts / Q000175:diagnosis* / Q000378:metabolism; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D013965:Thyroidectomy / Q000379:methods
chemical_list: D007457:Iodine Radioisotopes