TNM 7 Stage Group

This input is used for staging

Notes

**Note 1:** SEER*RSA added additional information to UICC 7th edition stages with UICC approval. If your registry submits the directly assigned Stage Groups to agencies other than SEER, please check the AJCC 7th edition manual to ensure you are using the appropriate logic. * Stage Group II (as defined in the table) * Stage Group III (as defined in the table) **Note 2:** The TNM combinations below are valid in UICC 7th edition, but not AJCC 7th edition. * Stage Group IIIB - (TX, T0, T1, T2), N3, M0 * Stage Group IV - Any T, Any N, M1 **Note 3:** While the stage groups below are valid, the specified TNM combinations are only included in SEER*RSA. * Stage Group IA - T1, N0, M0 - T1 is not included in the stage group definition * Stage Group IIA - T1, N1, M0 - T1 is not included in the stage group definition * Stage Group IIIA - (T1, T2), N2, M0 - T1 and T2 are not included in the stage group definition **Note 4:** The combination TX, N0, M0 can either be Occult (OC) or Unknown (99), depending on the reason for TX. You must select a value for Stage Group if you have this combination in Lung.

Default

99

NAACCR Item

NAACCR #910

Metadata

None
Stage Stage Display T N M
OC Occult TX N0 M0
0 0 Tis N0,X M0
1A IA T1,1a,1b N0 M0
1B IB T2a N0 M0
2 II T2 N1 M0
2A IIA T2b
Tis,T1,1a,1b,2a
N0
N1
M0
M0
2B IIB T2b
T3
N1
N0
M0
M0
3 III T0,X
T4
N2
NX
M0
M0
3A IIIA Tis,T1,1a,1b,2,2a,2b
T3
T4
N2
N1,2
N0,1
M0
M0
M0
3B IIIB T4
Any T
N2
N3
M0
M0
4 IV Any T Any N M1,1a,1b
99 Unknown T0
T1,1a,1b,2,2a,2b,3
T2
TX
TX
N0,1,X
NX
N0
N1,X
N0
M0
M0
M0
M0
M0
88 Not Applicable 88 88 88