Lymph Node Extranodal Extension Table

Notes

**Note**: For CS Lymph Nodes codes 100-270, 310-380, 500 and 505 ONLY, the N category for AJCC 7 staging is assigned based on the value of CS Site-Specific Factor 17, Extranodal Extension of Regional Lymph Nodes, as shown in this table.
CS Lymph Nodes SSF17 AJCC 7 N
100, 200, 250, 260, 270, 310, 350, 370, 380, 500, 505 000 ERROR:
100, 250, 260, 310, 370, 380, 500, 505 010, 030, 988, 999 N1
200, 270, 350 010, 030, 988, 999 N2
100, 200, 250, 260, 270, 310, 350, 370, 380, 500, 505 020 N3
CS Lymph Nodes SSF17 AJCC 7 N
100 000 ERROR:
200 000 ERROR:
250 000 ERROR:
260 000 ERROR:
270 000 ERROR:
310 000 ERROR:
350 000 ERROR:
370 000 ERROR:
380 000 ERROR:
500 000 ERROR:
505 000 ERROR:
100 010 N1
200 010 N2
250 010 N1
260 010 N1
270 010 N2
310 010 N1
350 010 N2
370 010 N1
380 010 N1
500 010 N1
505 010 N1
100 020 N3
200 020 N3
250 020 N3
260 020 N3
270 020 N3
310 020 N3
350 020 N3
370 020 N3
380 020 N3
500 020 N3
505 020 N3
100 030 N1
200 030 N2
250 030 N1
260 030 N1
270 030 N2
310 030 N1
350 030 N2
370 030 N1
380 030 N1
500 030 N1
505 030 N1
100 988, 999 N1
200 988, 999 N2
250 988, 999 N1
260 988, 999 N1
270 988, 999 N2
310 988, 999 N1
350 988, 999 N2
370 988, 999 N1
380 988, 999 N1
500 988, 999 N1
505 988, 999 N1