among the patients who had an extended radical mastectomy , metastases were found in parasternal lymph nodes in 17.7 % of those who had no metastasis in axillary or subclavicular lymph nodes , 40.9 % of those who had a single metastatic focus in axillary or subclavicular lymph nodes , and 54.2 % of those who had multiple axillary and/or subclavicular nodal metastases .
C0684830
metastasis
C0004454
axillary