Fig. 3

An example of ultrasonographic lymph node imagines analysis. (A) showed an ultrasound image of the right axilla exhibiting no signs of lymph node metastasis. (B) showed a color Doppler flow imaging (CDFI) image of the right axilla, indicating the absence of lymph node metastasis. (C) showed an ultrasound image of the left axilla showcasing lymph node metastasis, featuring a 24.0*16.0 mm mass identified as a lymph node. (D) showed a CDFI ultrasound image of lymph node metastasis in the left axilla, revealing discernible colored blood flow within the affected lymph node