| Autor: |
Chammas, Maria Cristina, Gerhard, Renê, De Oliveira, Ilka Regina Souza, Widman, Azzo, De Barros, Nestor, Durazzo, Marcelo, Ferraz, Alberto, Cerri, Giovanni Guido, Gerhard, Renê |
| Zdroj: |
Otolaryngology-Head & Neck Surgery; Jun2005, Vol. 132 Issue 6, p874-882, 9p |
| Abstrakt: |
This study purposes a new classification of thyroid nodules blood flow by power duplex Doppler ultrasound. A total of 177 nodules were studied with B-mode scanning, power Doppler, and spectral analysis. These data were compared with cytological results from ultrasound-guided fine-needle aspiration biopsy. Univariate and multivariate logistic regression analysis were performed. The power Doppler analysis of the nodules produced 5 vascular patterns: I, absence of signal blood flow; II, exclusively perinodular blood flow; III, perinodular ≥ central blood flow; IV, central blood flow > perinodular blood flow; V, exclusively central blood flow. Statistical analysis revealed a significant relationship between these vascular patterns and cytological results. The spectral analysis demonstrated that the resistance index were higher in nodules with malignant versus other cytology (P < 0.001). The results indicate that power duplex Doppler facilitates screening of thyroid nodules at high risk for malignancy with elevated sensitivity (92.3%) and specificity (88%). [Copyright &y& Elsevier] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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