Collaborative Stage Data Set - Revised 08/07/2013 FINAL
| Code | Description | Staging Basis |
| 0 | No surgical resection done. Evaluation based on physical examination, imaging examination, or other non-invasive clinical evidence. No autopsy evidence used. | c |
| 1 | No surgical resection done. Evaluation based on endoscopic examination, diagnostic biopsy, including fine needle aspiration biopsy, or other invasive techniques including surgical observation without biopsy. No autopsy evidence used. Does not meet criteria for AJCC pathologic staging. | c |
| 2 | No surgical resection done, but evidence derived from autopsy (tumor was suspected or diagnosed prior to autopsy). | p |
| 3 | Surgical resection performed WITHOUT pre-surgical systemic treatment or radiation OR surgical resection performed, unknown if pre-surgical systemic treatment or radiation performed. Evidence acquired before treatment, supplemented or modified by the additional evidence acquired during and from surgery, particularly from pathologic examination of the resected specimen. Meets criteria for AJCC pathologic staging. | p |
| 5 | Surgical resection performed WITH pre-surgical systemic treatment or radiation, BUT tumor size/extension based on clinical evidence. | c |
| 6 | Surgical resection performed WITH pre-surgical systemic treatment or radiation; tumor size and/or extension based on pathologic evidence. | yp |
| 8 | Evidence from autopsy only (tumor was unsuspected or undiagnosed prior to autopsy). | a |
| 9 | Unknown if surgical resection done Not assessed; cannot be assessed Unknown if assessed Not documented in patient record | c |