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Titolo:
Value of FDG PET in papillary thyroid carcinoma with negative I-131 whole-body scan
Autore:
Chung, JK; So, Y; Lee, JS; Choi, CW; Lim, SM; Lee, DS; Hong, SW; Youn, YK; Lee, MC; Cho, BY;
Indirizzi:
Seoul Natl Univ, Coll Med, Dept Nucl Med, Seoul, South Korea Seoul Natl Univ Seoul South Korea ed, Dept Nucl Med, Seoul, South Korea Seoul Natl Univ, Coll Med, Dept Internal Med, Seoul, South Korea Seoul Natl Univ Seoul South Korea Dept Internal Med, Seoul, South Korea Seoul Natl Univ, Coll Med, Dept Surg, Seoul, South Korea Seoul Natl Univ Seoul South Korea ll Med, Dept Surg, Seoul, South Korea Korea Canc Ctr Hosp, Dept Nucl Med, Seoul, South Korea Korea Canc Ctr Hosp Seoul South Korea Dept Nucl Med, Seoul, South Korea
Titolo Testata:
JOURNAL OF NUCLEAR MEDICINE
fascicolo: 6, volume: 40, anno: 1999,
pagine: 986 - 992
SICI:
0161-5505(199906)40:6<986:VOFPIP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; FOLLOW-UP; SERUM THYROGLOBULIN; CANCER; SCINTIGRAPHY; RADIOIODINE; MALIGNANCY; DIAGNOSIS;
Keywords:
papillary thyroid carcinoma; PET; F-18-fluorodeoxyglucose; I-131 whole-body scan; thyroglobulin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Chung, JK Seoul4,atl Univ Hosp, Dept Nucl Med, Chongno Gu, 28 Yungundong, Seoul 11074 Seoul Natl Univ Hosp 28 Yungundong Seoul South Korea 110744 074
Citazione:
J.K. Chung et al., "Value of FDG PET in papillary thyroid carcinoma with negative I-131 whole-body scan", J NUCL MED, 40(6), 1999, pp. 986-992

Abstract

The management of metastatic thyroid carcinoma patients with a negative I-131 scan presents considerable problems. Fifty-four athyrotic papillary thyroid carcinoma patients whose I-131 whole-body scans were negative underwent F-18-fluorodeoxyglucose (FDG) PET; the purpose was to determine whether this procedure could localize metastatic sites. We also assessed its usefulness in the management of these patients. Methods: Whole-body emission scan was performed 60 min after the injection of 370-555 MBq F-18-FDG, and additional regional attenuation-corrected scans were obtained. Metastasis was pathologically confirmed in 12 patients and was confirmed in other patients by overall clinical evaluation of the findings of other imaging studies and of the subsequent clinical course. Results: In 33 patients, tumor had metastasized, whereas 21 patients were in remission. FDG PET revealed metastasesin 31 patients (sensitivity 93.9%), whereas thyroglobulin levels were elevated in 18 patients (sensitivity 54.5%). FDG PET was positive in 14 of 15 metastatic cancer patients with normal thyroglobulin levels. In 20 of 21 patients in remission, FDG PET was negative (specificity 95.2%), whereas thyroglobulin levels were normal in 16 patients (specificity 76.1%). The sensitivity and specificity of FDG PET were significantly higher than those of serum thyroglobulin. In patients with negative I-131 scans, FDG PET detected cervical lymph node metastasis in 87.9%, lung metastasis in 27.3%, mediastinal metastasis in 33.3% and bone metastasis in 9.1%. In contrast, among 117 patients with I-131 scan-positive functional metastases, I-131 scan detected cervical lymph node metastasis in 61.5%, lung metastasis in 56.4%, mediastinal metastasis in 22.2% and bone metastasis: in 16.2%. In all 5 patients in whom thyroglobulin was false-negative with negative antithyroglobulin antibody, PET showed increased F-18-FDG uptake in cervical lymph nodes, mediastinal lymph nodes, or both. Among patients with increased F-18-FDG uptake only in the cervical lymph nodes, the nodes were dissected in 11. Metastasis was confirmed in all, even in normal-sized lymph nodes. Conclusion: FDG PET scan localized metastatic sites in I-131 scan-negative thyroid carcinomapatients with high accuracy. In particular, it was superior to I-131 whole-body scan and serum thyroglobulin measurement for detecting metastases to cervical lymph nodes. FDG PET was helpful for determining the surgical management of these patients.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 21:01:44