Pediatric Primary Tumor
This input is used for staging
Wilms Tumor Staging System
Notes
**Note 1:** Primary tumor evaluation is based on a surgical resection of the primary site only. * Code 999 if there is no surgical resection of the primary site * Do not use imaging findings to code this data item **Note 2:** Codes are based on whether patient had neoadjuvant chemotherapy or surgery first * If patient did not receive chemotherapy (or unknown if patient received chemotherapy) prior to surgery, see codes 100, 200, 300 * If patient did receive chemotherapy prior to surgery, see codes 110, 210, 310 **Note 3:** If there is bilateral disease, code the most advanced stage at diagnosis. * Code 4 for Laterality [NAACCR # 410] data itemDefault
999NAACCR Item
NAACCR #9623| Code | Description |
|---|---|
| 100 | No chemotherapy AND **no** biopsy prior to surgery (see code 300 if biopsy done prior to surgical resection) * Tumor limited to kidney and completely resected - Renal capsule intact, not penetrated by tumor - No tumor invasion of veins or lymphatics of renal sinus * Confined (limited) to the kidney, NOS * Localized, NOS * WITH NEGATIVE or UNKNOWN margins (see code 300 if positive margins) |
| 110 | Chemotherapy prior to surgery * Tumor limited to kidney and completely resected - Renal capsule may be infiltrated by tumor, but tumor does not reach the outer surface - Tumor may protrude or bulge into the pelvic system or ureter, but does not infiltrate - Vessels of renal sinus not involved |
| 200 | No chemotherapy and **no** biopsy prior to surgery (see code 300 if biopsy done prior to surgical resection) * Tumor extends beyond kidney but completely resected - Tumor penetrates renal capsule - Tumor in lymphatics or veins of renal sinus - Tumor in renal vein with margin not involved * WITH NEGATIVE or UNKNOWN margins (see code 300 if positive margins) |
| 210 | Chemotherapy prior to surgery * Tumor extends beyond kidney but completely resected - Tumor penetrates renal capsule into perirenal fat - Tumor infiltrates the renal sinus and/or invades blood and lymphatic vessels outside renal parenchyma but is completely resected - Tumor infiltrates adjacent organs or vena cava but is completely resected |
| 300 | No chemotherapy prior to surgery * Residual tumor confined to abdomen - Peritoneal contamination or tumor implant - Tumor spillage (rupture) of any degree occurring before or during surgery - Gross residual tumor in abdomen * WITH POSITIVE margins (includes localized tumor with positive margins) OR * Biopsy of tumor (including fine-needle aspiration) prior to surgical resection of kidney |
| 310 | Chemotherapy prior to surgery * Incomplete resection of the tumor (gross or microscopic extension beyond the resection margins) - Necrotic tumor or chemotherapy-induced changes - Tumor rupture before or intraoperatively - Tumor has penetrated the peritoneal surface - Tumor thrombi present at resection margins - Surgical biopsy prior to resection (does not include needle biopsy) |
| 800 | No evidence of primary tumor |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical record No surgical resection of the primary site Death certificate only |