From: Regional radiotherapy versus an axillary lymph node dissection after lumpectomy: a safe alternative for an axillary lymph node dissection in a clinically uninvolved axilla in breast cancer. A case control study with 10 years follow up
RT-group
S-group
Number of patients
180
341
Age, years*
67
61
T stages (%)
pT1
67.8
79.5
pT2
32.2
20.5
N stages (%)
PNx
100
-
pN0
76.8
pN1
22.9
pN2
0.3