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Changes in arm circumference between in the arm node preserved group and unpreserved group
SLNB=sentinel lymph node biopsy; ALND=axillary lymph node dissection; L=(If/u-Ib)-(Cf/u-Cb); I=ipsilateral upper-extremity circumference; C=contralateral upper-extremity circumference; f/u=follow-up; b=baseline (or preoperative).
*Mean±SD.
