Site-Specific Factor 10
This input is used for staging
Location of Primary Tumor
Notes
**Note:** Since both omental and peritoneal gastrointestinal stromal tumors (GIST) are coded with the same ICD-O-3 topography code (C481), this Site-Specific Factor must be used to identify the appropriate TNM stage table.Default
999NAACCR Item
NAACCR #2864| Code | Description | Stage Table |
|---|---|---|
| 010 | Mesentery Mesoappendix Mesocolon |
GIST Small Intestine |
| 020 | Omentum | GIST Stomach |
| 030 | Pelvic Peritoneum | GIST Small Intestine |
| 040 | Rectouterine pouch Cul de sac Pouch of Douglas |
GIST Small Intestine |
| 988 | Not applicable: Information not collected for this case | ERROR |
| 998 | Other specified peritoneal site | GIST Small Intestine |
| 999 | Unknown or no information Not documented in patient record |
GIST Small Intestine |