Site-Specific Factor 20
Tumor Infiltrating Lymphocytes (TIL)
Notes
**Note 1:** Tumor infiltrating lymphocytes (TILs) are white blood cells that have migrated into a tumor from the bloodstream. They are believed to represent an immune reaction/response to the tumor cells. A brisk response may indicate a favorable prognosis. **Note 2:** Code the status of tumor infiltrating lymphocytes (TIL) in the primary tumor as documented in the pathology report.Default
988NAACCR Item
NAACCR #2874| Code | Description |
|---|---|
| 000 | No tumor infiltrating lymphocytes (TIL) present |
| 010 | TIL present, non-brisk |
| 020 | TIL present, brisk |
| 030 | TIL present, NOS |
| 988 | Not applicable: Information not collected for this case |
| 998 | No histologic examination of primary site |
| 999 | Unknown or no information Not documented in patient record |