Gastrointestinal Stromal Tumor of Rectum and Rectosigmoid Junction

Primary Site Histology Staging Type
C199, C209 8935-8936 TNM 7 and Summary Stage

If you are working with a site/histology that only summary stages and you need to directly code it, please use the SEER Summary Stage 2000 manual

Notes

C199 Rectosigmoid junction
C209 Rectum, NOS

Note 1: This schema is based on the UICC chapter Gastrointestinal Stromal Tumour (GIST), pages 78-81.

  • Primary site C199 is not listed in this chapter of the UICC manual; however, it is included in this schema and TNM staged

Note 2: In addition to directly assigning TNM, Summary Stage 2000 (SS2000) must be captured. If directly assigning SS2000, use the Rectum chapter on page 100 of the SS2000 on-line manual.

Main Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Clinical T <BLANK> Yes NAACCR #940 None
Clinical N <BLANK> Yes NAACCR #950 None
Clinical M <BLANK> Yes NAACCR #960 None
TNM Clin Stage Group 99 Yes NAACCR #970 None
Pathologic T <BLANK> Yes NAACCR #880 None
Pathologic N <BLANK> Yes NAACCR #890 None
Pathologic M <BLANK> Yes NAACCR #900 None
TNM Path Stage Group 99 Yes NAACCR #910 None
SSF11: Mitotic Count 999 Yes NAACCR #2865 All None
SSF12: KIT Gene Immunohistochemistry (IHC) 988 No NAACCR #2866 CCCR/Canada
COC
None
SSF13: KIT Gene Mutations 988 No NAACCR #2867 None None
SSF14: PDGFRA Gene Mutation 988 No NAACCR #2868 None None
SSF15: Tumor Multiplicity 988 No NAACCR #2869 None None

Additional Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390 None
Primary Site <BLANK> Yes NAACCR #400 None
Histology <BLANK> Yes NAACCR #522 None
RX Summ Systemic/Surgery Sequence <BLANK> Yes NAACCR #1639 None
RX Summ Surgery/Radiation Sequence <BLANK> Yes NAACCR #1380 None
Regional Nodes Positive <BLANK> Yes NAACCR #820 None