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논문 기본 정보

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학술저널
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Gil, Tae Young (Department of Pediatrics, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine) Lee, Do Kyung (Department of Pediatrics, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine) Lee, Jung Min (Department of Pediatrics, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine) Yoo, Eun Sun (Department of Pediatrics, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine) Ryu, Kyung-Ha (Department of Pediatrics, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine)
저널정보
대한소아청소년과학회 Clinical and Experimental Pediatrics Korean journal of pediatrics 제57권 제6호
발행연도
2014.1
수록면
278 - 286 (9page)

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Purpose: To evaluate the potential utility of $^{123}I$-metaiodobenzylguanine ($^{123}I$-MIBG) scintigraphy and $^{18}F$-fluorodeoxyglucose ($^{18}F$-FDG) positron emission tomography (PET) for the detection of primary and metastatic lesions in pediatric neuroblastoma (NBL) patients, and to determine whether $^{18}F$-FDG PET is as beneficial as $^{123}I$-MIBG imaging. Methods: We selected 8 NBL patients with significant residual mass after operation and who had paired $^{123}I$-MIBG and $^{18}F$-FDG PET images that were obtained during the follow-up. We retrospectively reviewed the clinical charts and the findings of 45 paired scans. Results: Both scans correlated relatively well with the disease status as determined by standard imaging modalities during follow-up; the overall concordance rates were 32/45 (71.1%) for primary tumor sites and 33/45 (73.3%) for bone-bone marrow (BM) metastatic sites. In detecting primary tumor sites, $^{123}I$-MIBG might be superior to $^{18}F$-FDG PET. The sensitivity of $^{123}I$-MIBG and $^{18}F$-FDG PET were 96.7% and 70.9%, respectively, and their specificity were 85.7% and 92.8%, respectively. $^{18}F$-FDG PET failed to detect 9 true NBL lesions in 45 follow-up scans (false negative rate, 29%) with positive $^{123}I$-MIBG. For bone-BM metastatic sites, the sensitivity of $^{123}I$-MIBG and $^{18}F$-FDG PET were 72.7% and 81.8%, respectively, and the specificity were 79.1% and 100%, respectively. $^{123}I$-MIBG scan showed higher false positivity (20.8%) than $^{18}F$-FDG PET (0%). Conclusion: $^{123}I$-MIBG is superior for delineating primary tumor sites, and $^{18}F$-FDG PET could aid in discriminating inconclusive findings on bony metastatic NBL. Both scans can be complementarily used to clearly determine discrepancies or inconclusive findings on primary or bone-BM metastatic NBL during follow-up.

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