Difference of Clinical and Radiological Characteristics According to Radioiodine Avidity in Pulmonary Metastases of Differentiated Thyroid Cancer

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• 作者：Do-Hoon Kim (1)
  Ji-hoon Jung (1)
  Seung Hyun Son (1)
  Choon-Young Kim (1)
  Chae Moon Hong (1)
  Shin Young Jeong (1)
  Sang-Woo Lee (1)
  Jaetae Lee (1)
  Byeong-Cheol Ahn (1)
  
• 关键词：Differentiated thyroid cancer ; Pulmonary metastasis ; I ; 131 treatment ; Radioiodine avidity
• 刊名：Nuclear Medicine and Molecular Imaging
• 出版年：2014
• 出版时间：March 2014
• 年：2014
• 卷：48
• 期：1
• 页码：55-62
• 全文大小：291 KB
• 作者单位：Do-Hoon Kim (1)
  Ji-hoon Jung (1)
  Seung Hyun Son (1)
  Choon-Young Kim (1)
  Chae Moon Hong (1)
  Shin Young Jeong (1)
  Sang-Woo Lee (1)
  Jaetae Lee (1)
  Byeong-Cheol Ahn (1)
  
  1. Department of Nuclear Medicine, Kyungpook National University School of Medicine and Hospital, 50, Samduk 2-ga, Jung Gu, Daegu, 700-721, Republic of Korea
  
• ISSN：1869-3482

文摘

Purpose To evaluate differences in clinical, radiological and laboratory findings between pulmonary metastasis with and without radioiodine avidity in thyroidectomized differentiated thyroid cancer (DTC) patients with pulmonary metastasis who underwent high-dose I-131 treatment. Methods A total of 105 DTC patients with pulmonary metastasis (age, 48.7?±-6.8?years; women/men, 78/27) were included. Clinical characteristics, chest computed tomography (CT), F-18 fluorodeoxyglucose positron emission tomography (F-18 FDG PET)/CT and thyroid-stimulating hormone (TSH)-stimulated serum thyroglobulin (s-Tg) level were compared between patients with and without radioiodine uptake in metastatic lung lesions. The response to I-131 treatment was evaluated with follow-up study. Results Eighty-nine patients (84.8?%, whole-body scan positive [WBSP] group) showed radioiodine uptake at pulmonary metastasis on post I-131 treatment whole-body scan (WBS) and 16 patients (15.2?%, WBS negative [WBSN] group) did not show uptake at pulmonary lesions on the WBS. Ninety percent and 87?% of the WBSP group had visible metastatic lesions on CT and F-18 FDG PET/CT; however, all of the patients in the WBSN group showed lesions on CT and F-18 FDG PET/CT. In seven (6.7?%) of 105 patients, CT and F-18 FDG PET/CT could not detect pulmonary lesions, which were diagnosed by post I-131 treatment WBS. Complete disease remission was achieved in six (5.7?%) patients and all of them were in the WBSP group. Conclusions Metastatic lesion was not visualized on chest CT or F-18 FDG PET/CT in 6.7?% of DTC patients with pulmonary metastasis and the lesion was visualized only on post I-131 treatment WBS. Complete remission was achieved in 5.7?% of DTC patients with pulmonary metastasis and the cured metastases were non-visualizing or micronodular lesions on chest CT and demonstrated radioiodine avidity on post I-131 treatment WBS.