Figure 1.
The criteria of MG-reported metastatic ALNs on the MLO view mammogram. Both round enlarged lymph nodes with the short diameter ≥10 mm (a) and multiple round high density small lymph nodes with the short diameter<10 mm (b) were regarded as metastatic ALNs; and all the lymph nodes with fat density should be considered as benign lymph nodes (c). ALN, axillary lymph node;MG, mammography; MLO, mediolateral oblique.