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False-positive I-131 Uptake in Meningioma  

Jeong, Shin-Young (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Seo, Ji-Hyoung (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Bae, Jin-Ho (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Hwang, Jeong-Hyun (Department of Neurosurgery, Kyungpook National University Hospital, Kyungpook National University Medical School)
Ahn, Byeong-Cheol (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Lee, Jae-Tae (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Lee, Kyu-Bo (Department of Nuclear Medicine, Kyungpook National University Hospital, Kyungpook National University Medical School)
Publication Information
The Korean Journal of Nuclear Medicine / v.38, no.3, 2004 , pp. 272-273 More about this Journal
Abstract
We experienced a case with meningioma showing false positive I-131 uptake. A 55-years old female patient underwent high dose (150 mCi) radioactive iodine therapy to ablate remnant tissue after total thyroidectomy for papillary thyroid cancer. in addition to intense tracer uptake in thyroid bed, there was mild but focal abnormal uptake in left frontal lobe of the brain on post-therapy I-131 whole body scan. Subsequent brain MR imaging showed single mass lesion in left frontal lobe and the mass was resected under the impression of brain metastasis of thyroid carcinoma. Pathologic report confirmed meningioma from the surgical specimen.
Keywords
I-131 whole body scan; Brain meningioma;
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