4.2.1　Indication

The surgical scope of breast cancer modified radical mestectomy includes all breast tissue，lymphatic adipose tissue between the thoracic muscles，and lymphatic adipose tissue in the armpits.Retain the chest size muscle.Suitable for clinical stage Ⅰ-Ⅲ breast cancer.The operation can achieve the therapeutic effect of the radical mestectomy，but also can maintain the good function of the upper limbs，reduce the degree of chest damage after surgery，has been widely recognized and popularized by surgeons，and there are different kinds of further improvement.At present，modifieol radical mestectomy mainly used in clinical breast cancer includes：breast cancer modified radical mestectomy I type（Auchincinloss-Madden method），that is，surgical removal of all breast tissue，large chest，small muscle lymphatic adipose tissue，armpit lymphatic tissue，retention of chest size muscle，mainly used for non-immersion cancer and duration leaching cancer.Stage II that clinically no obvious armpit swelling lymph nodes can also be selected.Breast cancer modified radical mestectomy II（Patey method），that is，the removal of small chest muscles，while retaining the large thoracic muscle，the lymph node cleaning range which is equivalent to the surgery，ard more used in the armpit lymph nodemet more patients，the chest muscle syllabic lymph nodes，the armpit lymph nodes and the full cleaning of the armpit lymph nodes breast cancer patients.(https://www.daowen.com)