Stage IIA and IIB

tumor less than 2 cm and/or lymph nodes under the arm involved (IIA) OR
tumor greater than 2 cm and no lymph nodes under the arm are involved (IIA) OR
tumor greater than 2 cm but less than 5 cm and lymph nodes involved (IIB) OR
tumor greater than 5 cm but no lymph nodes involved (IIB)

total mastectomy; radiation after mastectomy may be needed

OR

lumpectomy plus radiation, in some cases following chemotherapy to shrink a large single cancer

axillary lymph node removal by traditional approach

OR

sentinel approach also known as sentinel lymph node dissection (preferred approach for people without enlarged nodes)

AND

possible radiation to supraclavicular and/or internal mammary lymph nodes

chemotherapy commonly recommended

hormonal therapy used for people with hormone-receptor-positive cancer

targeted therapy may be used for people with cancers that have certain characteristics (for example, cancers with too many HER2 receptors)

does not apply