NAACCR Item #1176: Spread Through Air Spaces (STAS)
| Item # | Length | Source of Standard | Section Name | Year Implemented | Version Implemented | XML NAACCR ID | Parent XML Element |
|---|---|---|---|---|---|---|---|
| 1176 | 1 | NAACCR | Stage/Prognostic Factors | 2026 | 26 | spreadThroughAirSpacesStas | Tumor |
Required Status:
NPCR Collect: No recommendation
CoC Collect: Required, site specific
SEER Collect: Collected by SEER from CoC-accredited hospitals
CCCR Collect: No recommendation
Description
Spread Through Air Spaces (STAS) is defined as micropapillary clusters, solid nests, or single cells of tumor extending beyond the edge of the tumor into the air spaces of the surrounding lung parenchyma.
Rationale
Initial studies have shown that the presence of STAS is associated with an increased incidence of recurrence in tumors that have undergone limited resection (e.g., segmentectomy, wedge resection).
Allowable Values
0, 1, 8, 9, Blank
Codes
| Code | Description |
|---|---|
| 0 | Not identified |
| 1 | Present |
| 8 | Not applicable: information not collected for this case (If this item is required by your standard setter, use of code 8 will result in an edit error). |
| 9 | No surgical resection done Surgical resection done and STAS not documented in the CAP Protocol or synoptic pathology report STAS not assessed or unknown if assessed or cannot be determined |
| Blank | Must be blank if diagnosis year is before 2026 |