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

999

NAACCR 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