Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
False-positive Radioiodine Uptake in a Functional Ovarian Cyst in a Patient Treated with Total Thyroidectomy for Papillary Cancer
Hye Yoon JangBo Hyun KimWon Jin KimYun Kyung JeonSang Soo KimYong Ki KimIn Ju Kim
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JOURNALS OPEN ACCESS

2013 Volume 52 Issue 20 Pages 2321-2323

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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.

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© 2013 by The Japanese Society of Internal Medicine
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