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Table 2 Univariate analysis of the correlation between ultrasonography findings of the primary tumor and rate of cervical lymph node metastasis in micropapillary thyroid cancer

From: Ultrasonographic findings relating to lymph node metastasis in single micropapillary thyroid cancer

Ultrasonography findings n(rate of lymph node metastasis, %) P value
Nature Solid 91 (41.6) 0.400
Mixed 0 (0)
Shape Round to ovoid 27 (32.5) 0.014
Irregular 32 (39.5)
Taller than wide 32 (57.1)
Echogenicity Isoechoic 4 (20.0) <0.001
Hypoechoic 23 (28.7)
Markedly hypoechoic 64 (53.3)
Margin Well defined 18 (30.5) 0.033
Poorly defined 73 (45.3)
Calcification Absent 65 (39.9) 0.745
Microcalcification 13 (44.8)
Other types 13 (46.4)