Unusual false-positive results of whole-body 131I scintigraphy: Four different case scenarios
Publish place: Iranian Journal of Nuclear Medicine، Vol: 27، Issue: 2
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IRJNM-27-2_014
تاریخ نمایه سازی: 19 بهمن 1398
Abstract:
Post-treatment or diagnostic whole-body radioiodine scintigraphy is widely used to assess the residual, recurrence, or metastases of differentiated thyroid carcinoma because of the high sensitivity and accuracy that this assessment provides. While bearing in mind all the diagnostic potential of this test, we have to consider its’ potential pitfalls, as well. Herein, we present 4 patients with differentiated thyroid carcinoma, who received 131I for ablation therapy after having undergone total thyroidectomy. On post-treatment radioiodine scintigraphy, foci of unusual 131I uptake were noted in facial, axillary, inguinal, and renal regions, which were finally either histologically or anatomically diagnosed as papillary oncocytic cystadenoma, ectopic axillary breast tissue, epidydimal cyst, and simple renal cyst, respectively. Such 131I uptake patterns underscore the value of recognizing where and why false-positive uptakes take place and should appreciate the potential causes of false-positive results in whole-body 131I scintigraphy.
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Authors
Alireza Emami-Ardekani
Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Hamidreza Amini
Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Sara Harsini
Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran|Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran|Association of Nuclear Medicine and Molecular Imaging
Armaghan Fard-Esfahani
Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
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