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 IV (as defined in the table) **Note 2:** While the stage groups below are valid, the specified TNM combinations are only included in SEER*RSA. * Stage Group IIA - T1, NX, M0 (Grade 3,4) - NX is not included in the stage group definition * Stage Group IIB - T2, NX, M0 (Grade 3,4) - NX is not included in the stage group definition * Stage Group III - T3, NX, M0 (Grade 3, 4) - NX is not included in the stage group definition * Stage Group IVA - Any T, NX, M1a, Any Grade - NX is not included in the stage group definition **Note 3:** While the stage group below is valid, the specified TNM combination is only included in SEER*RSA for non-Ewing histologies. * Stage Group IA - T1, NX, M0, Grade (1, 2, 9) - NX is not included in the stage group definition * Stage Group IB - (T2, T3), NX, M0, Grade (1, 2, 9) - NX is not included in the stage group definition **Note 4:** Ewing sarcoma (ICD-O-3 Histology 9260, 9364) is always classified as High Grade (3 or 4). Ewing sarcoma should NOT be assigned Stage group IA or IB.

Default

99

NAACCR Item

NAACCR #970

Metadata

None
Stage Stage Display T N M Grade Histology
1A IA T1 N0,X M0 1,2,9 NOT 9260, 9364 (Not Ewing)
1B IB T2,3 N0,X M0 1,2,9 NOT 9260, 9364 (Not Ewing)
2A IIA T1 N0,X M0 3,4 Any Histology
2B IIB T2 N0,X M0 3,4 Any Histology
3 III T3 N0,X M0 3,4 Any Histology
4 IV Any T N0,X M1 Any Grade Any Histology
4A IVA Any T N0,X M1a Any Grade Any Histology
4B IVB Any T
Any T
N1
Any N
M0,1,1a
M1b
Any Grade
Any Grade
Any Histology
Any Histology
99 Unknown TX N0,X M0 Any Grade Any Histology
88 Not Applicable 88 88 88 Any Grade Any Histology