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Table 4 The number of lymph nodes per patient traced by CEUS and MB

From: The value of contrast‐enhanced ultrasound in determining the location of sentinel lymph nodes in breast cancer

no. lymph nodes The number and percentage of patients  
CEUS Percentage (%) MB Percentage (%)  
0 17 4.4 31 7.9  
1 120 30.8 26 6.7  
2 132 33.8 155 39.7  
3 71 18.2 106 27.2  
4 39 10.0 43 11.0  
5 11 2.8 29 7.4  
Total 390 100.0 390 100.0 p < 0.001
  1. Compared with the number of lymph nodes traced by CEUS and MB, the data did not conform to a normal distribution, and the paired sample rank sum test was used. P < 0.001, the difference was statistically significant. MB could observe more lymph nodes