This poster is published under an
open license. Please read the
disclaimer for further details.
Keywords:
Thyroid / Parathyroids, Elastography, Outcomes analysis, Metastases
Authors:
W. S. Jung1, J.-A. Kim2, E. J. Son2, J. H. Youk2, C. S. Park1; 1 Seoul/KR, 2Seoul/KR
DOI:
10.1594/ecr2014/C-0489
Results
Correlation of SWE and pathologic results of lymph nodes
-51 (60.7%) lymph nodes were metastatic and 33 (39.3 %) lymph nodes were benign.
-SWE EI according to the pathologic diagnosis was listed in table 1.
-Emean,
Emin,
Emax and Emean-m were significantly higher in metastatic lymph nodes than in benign lymph nodes (table1,
P < 0.001).
Correlation of SWE and pathologic results of lymph nodes
-Diagnostic performances for predicting metastatic LNs using BUS,
SWE EI alone and SWE EI combined with BUS are listed in Table 2.
-The estimated cut off values distinguishing benign from metastatic nodes were 29 kPa (Emean),
57 kPa (Emax),
24 kPa (Emin) and 1.676 (Emean-m),
respectively.
-There were no significant differences in sensitivity of Emax,
in specificity of Emean and Emax,
in PPV of Emean and Emean-m,
in accuracy of Emean,
in AUC values of Emean and Emean-m between B-mode US and SWE EI for predicting lymph node metastasis (table 2).
Correlation of SWE and histopatholgic findings of metastatic lymph nodes
-The correlations of SWE EI and the histopathologic findings of metastatic lymph nodes are listed in table 4.
-The correlations between SWE EI of Emean,
Emax,
Emin,
Emean-m and No.
of metastatic LNs were not statistically significant (P>0.05),
but Emean,
Emax and Emin were significantly associated with the ratio of No.
of metastatic LNs/dissected LNs and Emean,
Emax,
Emin and Emean-m were significantly associated with the largest size of the metastatic LNs (Table 4).
-The SWE EI in metastatic LNs with extranodal extension was significantly higher than the LNs without extranodal extension group (P<0.05) (Table 4).